{"items":[{"id":"NVI-00004486","kind":"vulnerability","title":"phpSysInfo has an IP allowlist (PSI_ALLOWED) bypass via spoofed X-Forwarded-For / Client-IP headers","revision":5,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-786w-p5pm-cvgh","CVE-2026-55584"],"plain_summary":"GitHub lists this reviewed advisory for phpsysinfo/phpsysinfo. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-02dfa840248b4ac72586ff43a09af448"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 3.4.6 for phpsysinfo/phpsysinfo. Confirm the publisher’s latest guidance.","source_ids":["sr-6829b73ec18be7b7b1977c46142cfae6"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-08-28T18:30:56.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-25351ce1727cff4c2b749fe2dec710e3"},{"kind":"CVSS","as_of":"2026-09-09T21:09:13.080Z","value":"7.5 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-c71c93e4894d4753377514dfb032d2dc"},{"kind":"EPSS","as_of":"2026-11-04T12:03:12.000Z","value":"1.910%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.79851. Missing scores are unknown.","source_id":"sr-02dfa840248b4ac72586ff43a09af448"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-25351ce1727cff4c2b749fe2dec710e3","url":"https://github.com/advisories/GHSA-786w-p5pm-cvgh","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-786w-p5pm-cvgh","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T09:56:23.004Z"},{"id":"sr-6829b73ec18be7b7b1977c46142cfae6","url":"https://github.com/advisories/GHSA-786w-p5pm-cvgh","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-786w-p5pm-cvgh","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:59.946Z"},{"id":"sr-c71c93e4894d4753377514dfb032d2dc","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55584","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-55584","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:39.943Z"},{"id":"sr-02dfa840248b4ac72586ff43a09af448","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-55584","publisher":"FIRST EPSS","observed_at":"2026-11-04T23:33:33.049Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-25351ce1727cff4c2b749fe2dec710e3"],"technology":"phpsysinfo/phpsysinfo","known_exclusions":[],"conditions_summary":"## Summary\nphpSysInfo's `PSI_ALLOWED` IP allowlist can be trivially bypassed by any unauthenticated remote attacker. The access-control check in `read_config.php` derives the client IP from the attacker-controlled `X-Forwarded-For` and `Client-IP` HTTP headers **before** falling back to `REMOTE_ADDR`. An attacker can send `X-Forwarded-For: ` to impersonate a trusted address and gain full access to all exposed system information, defeating the only IP-based access restriction the application provides.\n\n## Affected component\n- File: `read_config.php`\n- Versions: all versions up to and including 3.4.x (current `main`)\n\n## Description\nWhen `PSI_ALLOWED` is configured, `read_config.php` enforces an IP allowlist. The client IP is resolved as follows:\n\n```php\nif (isset($_SERVER[\"HTTP_X_FORWARDED_FOR\"])) {\n    $ip = $_SERVER[\"HTTP_X_FORWARDED_FOR\"];\n} else {\n    if (isset($_SERVER[\"HTTP_CLIENT_IP\"])) {\n        $ip = $_SERVER[\"HTTP_CLIENT_IP\"];\n    } else {\n        $ip = $_SERVER[\"REMOTE_ADDR\"];\n    }\n}\n```\n\nBoth `HTTP_X_FORWARDED_FOR` and `HTTP_CLIENT_IP` are fully attacker-controlled request headers. They are trusted unconditionally and take priority over `REMOTE_ADDR`. The","public_affected_ranges":["<= 3.4.5"]},{"certainty":"source_listed","source_ids":["sr-6829b73ec18be7b7b1977c46142cfae6"],"technology":"phpsysinfo/phpsysinfo","known_exclusions":[],"conditions_summary":"## Summary\nphpSysInfo's `PSI_ALLOWED` IP allowlist can be trivially bypassed by any unauthenticated remote attacker. The access-control check in `read_config.php` derives the client IP from the attacker-controlled `X-Forwarded-For` and `Client-IP` HTTP headers **before** falling back to `REMOTE_ADDR`. An attacker can send `X-Forwarded-For: ` to impersonate a trusted address and gain full access to all exposed system information, defeating the only IP-based access restriction the application provides.\n\n## Affected component\n- File: `read_config.php`\n- Versions: all versions up to and including 3.4.x (current `main`)\n\n## Description\nWhen `PSI_ALLOWED` is configured, `read_config.php` enforces an IP allowlist. The client IP is resolved as follows:\n\n```php\nif (isset($_SERVER[\"HTTP_X_FORWARDED_FOR\"])) {\n    $ip = $_SERVER[\"HTTP_X_FORWARDED_FOR\"];\n} else {\n    if (isset($_SERVER[\"HTTP_CLIENT_IP\"])) {\n        $ip = $_SERVER[\"HTTP_CLIENT_IP\"];\n    } else {\n        $ip = $_SERVER[\"REMOTE_ADDR\"];\n    }\n}\n```\n\nBoth `HTTP_X_FORWARDED_FOR` and `HTTP_CLIENT_IP` are fully attacker-controlled request headers. They are trusted unconditionally and take priority over `REMOTE_ADDR`. The","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 3.4.6"]}],"null_published_at":"2026-11-07T22:29:23.421Z","source_updated_at":"2026-08-28T18:30:56.000Z","source_disclosed_at":"2026-08-28T18:30:55.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:41:59.946Z"},{"id":"NVI-00004486","kind":"vulnerability","title":"phpSysInfo has an IP allowlist (PSI_ALLOWED) bypass via spoofed X-Forwarded-For / Client-IP headers","revision":4,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-786w-p5pm-cvgh","CVE-2026-55584"],"plain_summary":"GitHub lists this reviewed advisory for phpsysinfo/phpsysinfo. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-02dfa840248b4ac72586ff43a09af448"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 3.4.6 for phpsysinfo/phpsysinfo. Confirm the publisher’s latest guidance.","source_ids":["sr-6829b73ec18be7b7b1977c46142cfae6"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-08-28T18:30:56.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-25351ce1727cff4c2b749fe2dec710e3"},{"kind":"EPSS","as_of":"2026-11-04T12:03:12.000Z","value":"1.910%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.79851. Missing scores are unknown.","source_id":"sr-02dfa840248b4ac72586ff43a09af448"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-25351ce1727cff4c2b749fe2dec710e3","url":"https://github.com/advisories/GHSA-786w-p5pm-cvgh","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-786w-p5pm-cvgh","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T09:56:23.004Z"},{"id":"sr-6829b73ec18be7b7b1977c46142cfae6","url":"https://github.com/advisories/GHSA-786w-p5pm-cvgh","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-786w-p5pm-cvgh","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:59.946Z"},{"id":"sr-02dfa840248b4ac72586ff43a09af448","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-55584","publisher":"FIRST EPSS","observed_at":"2026-11-04T23:33:33.049Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-25351ce1727cff4c2b749fe2dec710e3"],"technology":"phpsysinfo/phpsysinfo","known_exclusions":[],"conditions_summary":"## Summary\nphpSysInfo's `PSI_ALLOWED` IP allowlist can be trivially bypassed by any unauthenticated remote attacker. The access-control check in `read_config.php` derives the client IP from the attacker-controlled `X-Forwarded-For` and `Client-IP` HTTP headers **before** falling back to `REMOTE_ADDR`. An attacker can send `X-Forwarded-For: ` to impersonate a trusted address and gain full access to all exposed system information, defeating the only IP-based access restriction the application provides.\n\n## Affected component\n- File: `read_config.php`\n- Versions: all versions up to and including 3.4.x (current `main`)\n\n## Description\nWhen `PSI_ALLOWED` is configured, `read_config.php` enforces an IP allowlist. The client IP is resolved as follows:\n\n```php\nif (isset($_SERVER[\"HTTP_X_FORWARDED_FOR\"])) {\n    $ip = $_SERVER[\"HTTP_X_FORWARDED_FOR\"];\n} else {\n    if (isset($_SERVER[\"HTTP_CLIENT_IP\"])) {\n        $ip = $_SERVER[\"HTTP_CLIENT_IP\"];\n    } else {\n        $ip = $_SERVER[\"REMOTE_ADDR\"];\n    }\n}\n```\n\nBoth `HTTP_X_FORWARDED_FOR` and `HTTP_CLIENT_IP` are fully attacker-controlled request headers. They are trusted unconditionally and take priority over `REMOTE_ADDR`. The","public_affected_ranges":["<= 3.4.5"]},{"certainty":"source_listed","source_ids":["sr-6829b73ec18be7b7b1977c46142cfae6"],"technology":"phpsysinfo/phpsysinfo","known_exclusions":[],"conditions_summary":"## Summary\nphpSysInfo's `PSI_ALLOWED` IP allowlist can be trivially bypassed by any unauthenticated remote attacker. The access-control check in `read_config.php` derives the client IP from the attacker-controlled `X-Forwarded-For` and `Client-IP` HTTP headers **before** falling back to `REMOTE_ADDR`. An attacker can send `X-Forwarded-For: ` to impersonate a trusted address and gain full access to all exposed system information, defeating the only IP-based access restriction the application provides.\n\n## Affected component\n- File: `read_config.php`\n- Versions: all versions up to and including 3.4.x (current `main`)\n\n## Description\nWhen `PSI_ALLOWED` is configured, `read_config.php` enforces an IP allowlist. The client IP is resolved as follows:\n\n```php\nif (isset($_SERVER[\"HTTP_X_FORWARDED_FOR\"])) {\n    $ip = $_SERVER[\"HTTP_X_FORWARDED_FOR\"];\n} else {\n    if (isset($_SERVER[\"HTTP_CLIENT_IP\"])) {\n        $ip = $_SERVER[\"HTTP_CLIENT_IP\"];\n    } else {\n        $ip = $_SERVER[\"REMOTE_ADDR\"];\n    }\n}\n```\n\nBoth `HTTP_X_FORWARDED_FOR` and `HTTP_CLIENT_IP` are fully attacker-controlled request headers. They are trusted unconditionally and take priority over `REMOTE_ADDR`. The","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 3.4.6"]}],"null_published_at":"2026-11-06T07:24:11.240Z","source_updated_at":"2026-08-28T18:30:56.000Z","source_disclosed_at":"2026-08-28T18:30:55.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T21:41:59.946Z"},{"id":"NVI-00004486","kind":"vulnerability","title":"phpSysInfo has an IP allowlist (PSI_ALLOWED) bypass via spoofed X-Forwarded-For / Client-IP headers","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-786w-p5pm-cvgh","CVE-2026-55584"],"plain_summary":"GitHub lists this reviewed advisory for phpsysinfo/phpsysinfo. 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This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-08-28T18:30:56.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-25351ce1727cff4c2b749fe2dec710e3"},{"kind":"EPSS","as_of":"2026-11-03T12:00:27.000Z","value":"1.910%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.79815. Missing scores are unknown.","source_id":"sr-11f22852fd49a8d01cf5d13d9c930c2a"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-25351ce1727cff4c2b749fe2dec710e3","url":"https://github.com/advisories/GHSA-786w-p5pm-cvgh","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-786w-p5pm-cvgh","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T09:56:23.004Z"},{"id":"sr-6829b73ec18be7b7b1977c46142cfae6","url":"https://github.com/advisories/GHSA-786w-p5pm-cvgh","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-786w-p5pm-cvgh","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:59.946Z"},{"id":"sr-11f22852fd49a8d01cf5d13d9c930c2a","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-55584","publisher":"FIRST EPSS","observed_at":"2026-11-03T17:44:07.788Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-25351ce1727cff4c2b749fe2dec710e3"],"technology":"phpsysinfo/phpsysinfo","known_exclusions":[],"conditions_summary":"## Summary\nphpSysInfo's `PSI_ALLOWED` IP allowlist can be trivially bypassed by any unauthenticated remote attacker. The access-control check in `read_config.php` derives the client IP from the attacker-controlled `X-Forwarded-For` and `Client-IP` HTTP headers **before** falling back to `REMOTE_ADDR`. An attacker can send `X-Forwarded-For: ` to impersonate a trusted address and gain full access to all exposed system information, defeating the only IP-based access restriction the application provides.\n\n## Affected component\n- File: `read_config.php`\n- Versions: all versions up to and including 3.4.x (current `main`)\n\n## Description\nWhen `PSI_ALLOWED` is configured, `read_config.php` enforces an IP allowlist. The client IP is resolved as follows:\n\n```php\nif (isset($_SERVER[\"HTTP_X_FORWARDED_FOR\"])) {\n    $ip = $_SERVER[\"HTTP_X_FORWARDED_FOR\"];\n} else {\n    if (isset($_SERVER[\"HTTP_CLIENT_IP\"])) {\n        $ip = $_SERVER[\"HTTP_CLIENT_IP\"];\n    } else {\n        $ip = $_SERVER[\"REMOTE_ADDR\"];\n    }\n}\n```\n\nBoth `HTTP_X_FORWARDED_FOR` and `HTTP_CLIENT_IP` are fully attacker-controlled request headers. They are trusted unconditionally and take priority over `REMOTE_ADDR`. The","public_affected_ranges":["<= 3.4.5"]},{"certainty":"source_listed","source_ids":["sr-6829b73ec18be7b7b1977c46142cfae6"],"technology":"phpsysinfo/phpsysinfo","known_exclusions":[],"conditions_summary":"## Summary\nphpSysInfo's `PSI_ALLOWED` IP allowlist can be trivially bypassed by any unauthenticated remote attacker. The access-control check in `read_config.php` derives the client IP from the attacker-controlled `X-Forwarded-For` and `Client-IP` HTTP headers **before** falling back to `REMOTE_ADDR`. An attacker can send `X-Forwarded-For: ` to impersonate a trusted address and gain full access to all exposed system information, defeating the only IP-based access restriction the application provides.\n\n## Affected component\n- File: `read_config.php`\n- Versions: all versions up to and including 3.4.x (current `main`)\n\n## Description\nWhen `PSI_ALLOWED` is configured, `read_config.php` enforces an IP allowlist. The client IP is resolved as follows:\n\n```php\nif (isset($_SERVER[\"HTTP_X_FORWARDED_FOR\"])) {\n    $ip = $_SERVER[\"HTTP_X_FORWARDED_FOR\"];\n} else {\n    if (isset($_SERVER[\"HTTP_CLIENT_IP\"])) {\n        $ip = $_SERVER[\"HTTP_CLIENT_IP\"];\n    } else {\n        $ip = $_SERVER[\"REMOTE_ADDR\"];\n    }\n}\n```\n\nBoth `HTTP_X_FORWARDED_FOR` and `HTTP_CLIENT_IP` are fully attacker-controlled request headers. They are trusted unconditionally and take priority over `REMOTE_ADDR`. The","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 3.4.6"]}],"null_published_at":"2026-11-06T00:29:57.305Z","source_updated_at":"2026-08-28T18:30:56.000Z","source_disclosed_at":"2026-08-28T18:30:55.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T21:41:59.946Z"},{"id":"NVI-00004486","kind":"vulnerability","title":"phpSysInfo has an IP allowlist (PSI_ALLOWED) bypass via spoofed X-Forwarded-For / Client-IP headers","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-786w-p5pm-cvgh","CVE-2026-55584"],"plain_summary":"GitHub lists this reviewed advisory for phpsysinfo/phpsysinfo. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-25351ce1727cff4c2b749fe2dec710e3"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 3.4.6 for phpsysinfo/phpsysinfo. Confirm the publisher’s latest guidance.","source_ids":["sr-6829b73ec18be7b7b1977c46142cfae6"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-08-28T18:30:56.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-25351ce1727cff4c2b749fe2dec710e3"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-25351ce1727cff4c2b749fe2dec710e3","url":"https://github.com/advisories/GHSA-786w-p5pm-cvgh","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-786w-p5pm-cvgh","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T09:56:23.004Z"},{"id":"sr-6829b73ec18be7b7b1977c46142cfae6","url":"https://github.com/advisories/GHSA-786w-p5pm-cvgh","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-786w-p5pm-cvgh","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:59.946Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-25351ce1727cff4c2b749fe2dec710e3"],"technology":"phpsysinfo/phpsysinfo","known_exclusions":[],"conditions_summary":"## Summary\nphpSysInfo's `PSI_ALLOWED` IP allowlist can be trivially bypassed by any unauthenticated remote attacker. The access-control check in `read_config.php` derives the client IP from the attacker-controlled `X-Forwarded-For` and `Client-IP` HTTP headers **before** falling back to `REMOTE_ADDR`. An attacker can send `X-Forwarded-For: ` to impersonate a trusted address and gain full access to all exposed system information, defeating the only IP-based access restriction the application provides.\n\n## Affected component\n- File: `read_config.php`\n- Versions: all versions up to and including 3.4.x (current `main`)\n\n## Description\nWhen `PSI_ALLOWED` is configured, `read_config.php` enforces an IP allowlist. The client IP is resolved as follows:\n\n```php\nif (isset($_SERVER[\"HTTP_X_FORWARDED_FOR\"])) {\n    $ip = $_SERVER[\"HTTP_X_FORWARDED_FOR\"];\n} else {\n    if (isset($_SERVER[\"HTTP_CLIENT_IP\"])) {\n        $ip = $_SERVER[\"HTTP_CLIENT_IP\"];\n    } else {\n        $ip = $_SERVER[\"REMOTE_ADDR\"];\n    }\n}\n```\n\nBoth `HTTP_X_FORWARDED_FOR` and `HTTP_CLIENT_IP` are fully attacker-controlled request headers. They are trusted unconditionally and take priority over `REMOTE_ADDR`. The","public_affected_ranges":["<= 3.4.5"]},{"certainty":"source_listed","source_ids":["sr-6829b73ec18be7b7b1977c46142cfae6"],"technology":"phpsysinfo/phpsysinfo","known_exclusions":[],"conditions_summary":"## Summary\nphpSysInfo's `PSI_ALLOWED` IP allowlist can be trivially bypassed by any unauthenticated remote attacker. The access-control check in `read_config.php` derives the client IP from the attacker-controlled `X-Forwarded-For` and `Client-IP` HTTP headers **before** falling back to `REMOTE_ADDR`. An attacker can send `X-Forwarded-For: ` to impersonate a trusted address and gain full access to all exposed system information, defeating the only IP-based access restriction the application provides.\n\n## Affected component\n- File: `read_config.php`\n- Versions: all versions up to and including 3.4.x (current `main`)\n\n## Description\nWhen `PSI_ALLOWED` is configured, `read_config.php` enforces an IP allowlist. The client IP is resolved as follows:\n\n```php\nif (isset($_SERVER[\"HTTP_X_FORWARDED_FOR\"])) {\n    $ip = $_SERVER[\"HTTP_X_FORWARDED_FOR\"];\n} else {\n    if (isset($_SERVER[\"HTTP_CLIENT_IP\"])) {\n        $ip = $_SERVER[\"HTTP_CLIENT_IP\"];\n    } else {\n        $ip = $_SERVER[\"REMOTE_ADDR\"];\n    }\n}\n```\n\nBoth `HTTP_X_FORWARDED_FOR` and `HTTP_CLIENT_IP` are fully attacker-controlled request headers. They are trusted unconditionally and take priority over `REMOTE_ADDR`. The","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 3.4.6"]}],"null_published_at":"2026-11-02T10:00:37.191Z","source_updated_at":"2026-08-28T18:30:56.000Z","source_disclosed_at":"2026-08-28T18:30:55.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:41:59.946Z"},{"id":"NVI-00004486","kind":"vulnerability","title":"phpSysInfo has an IP allowlist (PSI_ALLOWED) bypass via spoofed X-Forwarded-For / Client-IP headers","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-786w-p5pm-cvgh","CVE-2026-55584"],"plain_summary":"OSV carries this publisher advisory for phpsysinfo/phpsysinfo. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 3.4.6 for phpsysinfo/phpsysinfo. Confirm the publisher’s latest guidance.","source_ids":["sr-6829b73ec18be7b7b1977c46142cfae6"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-6829b73ec18be7b7b1977c46142cfae6","url":"https://github.com/advisories/GHSA-786w-p5pm-cvgh","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-786w-p5pm-cvgh","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:59.946Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-6829b73ec18be7b7b1977c46142cfae6"],"technology":"phpsysinfo/phpsysinfo","known_exclusions":[],"conditions_summary":"## Summary\nphpSysInfo's `PSI_ALLOWED` IP allowlist can be trivially bypassed by any unauthenticated remote attacker. The access-control check in `read_config.php` derives the client IP from the attacker-controlled `X-Forwarded-For` and `Client-IP` HTTP headers **before** falling back to `REMOTE_ADDR`. An attacker can send `X-Forwarded-For: ` to impersonate a trusted address and gain full access to all exposed system information, defeating the only IP-based access restriction the application provides.\n\n## Affected component\n- File: `read_config.php`\n- Versions: all versions up to and including 3.4.x (current `main`)\n\n## Description\nWhen `PSI_ALLOWED` is configured, `read_config.php` enforces an IP allowlist. The client IP is resolved as follows:\n\n```php\nif (isset($_SERVER[\"HTTP_X_FORWARDED_FOR\"])) {\n    $ip = $_SERVER[\"HTTP_X_FORWARDED_FOR\"];\n} else {\n    if (isset($_SERVER[\"HTTP_CLIENT_IP\"])) {\n        $ip = $_SERVER[\"HTTP_CLIENT_IP\"];\n    } else {\n        $ip = $_SERVER[\"REMOTE_ADDR\"];\n    }\n}\n```\n\nBoth `HTTP_X_FORWARDED_FOR` and `HTTP_CLIENT_IP` are fully attacker-controlled request headers. They are trusted unconditionally and take priority over `REMOTE_ADDR`. The","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 3.4.6"]}],"null_published_at":"2026-10-31T22:12:57.128Z","source_updated_at":"2026-08-28T18:55:36.138Z","source_disclosed_at":"2026-08-28T18:30:55.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-10-31T21:41:59.946Z"}],"next_cursor":null,"snapshot_revision":"42594"}