{"items":[{"id":"NVI-00004279","kind":"vulnerability","title":"LibreNMS — Stored XSS via SNMP/Syslog Data in Legacy Templates","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-7w8c-qgxg-m7jx","CVE-2026-84192"],"plain_summary":"GitHub lists this reviewed advisory for librenms/librenms. 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-201670b6c07e966c1811491b39eebb59"],"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 26.5.0 for librenms/librenms. Confirm the publisher’s latest guidance.","source_ids":["sr-5fc1f6466ad248649bf870c12aef561d"],"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":"2026-08-26T18:05:47.000Z","value":"7.1 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-15072ff3fa4c61cb7f205d147b333ef8"},{"kind":"CVSS","as_of":"2026-10-08T16:17:54.780Z","value":"7.1 HIGH (3.1)","meaning":"disclosure@vulncheck.com severity; no combined Null risk score.","source_id":"sr-be0ddc7d3ae88b826500a65caaa74b28"},{"kind":"CVSS","as_of":"2026-10-08T16:17:54.780Z","value":"7.1 HIGH (4.0)","meaning":"disclosure@vulncheck.com severity; no combined Null risk score.","source_id":"sr-be0ddc7d3ae88b826500a65caaa74b28"},{"kind":"EPSS","as_of":"2026-11-03T12:00:27.000Z","value":"0.331%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.26331. Missing scores are unknown.","source_id":"sr-201670b6c07e966c1811491b39eebb59"}],"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-15072ff3fa4c61cb7f205d147b333ef8","url":"https://github.com/advisories/GHSA-7w8c-qgxg-m7jx","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-7w8c-qgxg-m7jx","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T09:56:23.004Z"},{"id":"sr-5fc1f6466ad248649bf870c12aef561d","url":"https://github.com/advisories/GHSA-7w8c-qgxg-m7jx","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-7w8c-qgxg-m7jx","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:59.955Z"},{"id":"sr-be0ddc7d3ae88b826500a65caaa74b28","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-84192","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-84192","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:58.008Z"},{"id":"sr-201670b6c07e966c1811491b39eebb59","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-2026-84192","publisher":"FIRST EPSS","observed_at":"2026-11-03T17:45:16.083Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-15072ff3fa4c61cb7f205d147b333ef8"],"technology":"librenms/librenms","known_exclusions":[],"conditions_summary":"## Summary\n\nMultiple legacy PHP template files in LibreNMS directly output SNMP-sourced and syslog-sourced data into HTML without escaping. An attacker who controls a monitored network device (via compromised SNMP agent or syslog sender) can inject arbitrary JavaScript that executes when any authenticated LibreNMS user views the affected pages.\n\n## Vulnerable Code\n\n### Location 1: Syslog `program` field (clearest instance)\n\n**File:** `includes/html/print-syslog.inc.php:11,13`\n\n```php\n$syslog_output .= '' . $entry['program'] . ' :  ' . htmlspecialchars((string) $entry['msg']) . '';\n```\n\nThe `program` field is output without `htmlspecialchars()` while the adjacent `msg` field IS properly escaped. The `program` value comes from syslog messages received from monitored devices.\n\n### Location 2: Alert details `ifAlias` (highest impact — main alerts page)\n\n**File:** `includes/html/functions.inc.php:607`\n\n```php\n$fault_detail .= $tmp_alerts['ifAlias'] . '; ';\n```\n\nThe `ifAlias` (port description) comes from SNMP polling and is stored in the `ports` table. When a port-related alert fires, `format_alert_details()` renders it unescaped. Multiple other fields in this ","public_affected_ranges":["< 26.5.0"]},{"certainty":"source_listed","source_ids":["sr-5fc1f6466ad248649bf870c12aef561d"],"technology":"librenms/librenms","known_exclusions":[],"conditions_summary":"## Summary\n\nMultiple legacy PHP template files in LibreNMS directly output SNMP-sourced and syslog-sourced data into HTML without escaping. An attacker who controls a monitored network device (via compromised SNMP agent or syslog sender) can inject arbitrary JavaScript that executes when any authenticated LibreNMS user views the affected pages.\n\n## Vulnerable Code\n\n### Location 1: Syslog `program` field (clearest instance)\n\n**File:** `includes/html/print-syslog.inc.php:11,13`\n\n```php\n$syslog_output .= '' . $entry['program'] . ' :  ' . htmlspecialchars((string) $entry['msg']) . '';\n```\n\nThe `program` field is output without `htmlspecialchars()` while the adjacent `msg` field IS properly escaped. The `program` value comes from syslog messages received from monitored devices.\n\n### Location 2: Alert details `ifAlias` (highest impact — main alerts page)\n\n**File:** `includes/html/functions.inc.php:607`\n\n```php\n$fault_detail .= $tmp_alerts['ifAlias'] . '; ';\n```\n\nThe `ifAlias` (port description) comes from SNMP polling and is stored in the `ports` table. When a port-related alert fires, `format_alert_details()` renders it unescaped. Multiple other fields in this ","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 26.5.0"]}],"null_published_at":"2026-11-07T22:29:23.378Z","source_updated_at":"2026-08-26T18:05:47.000Z","source_disclosed_at":"2026-08-26T18:05:46.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:41:59.955Z"},{"id":"NVI-00004279","kind":"vulnerability","title":"LibreNMS — Stored XSS via SNMP/Syslog Data in Legacy Templates","revision":4,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-7w8c-qgxg-m7jx","CVE-2026-84192"],"plain_summary":"GitHub lists this reviewed advisory for librenms/librenms. 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-201670b6c07e966c1811491b39eebb59"],"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 26.5.0 for librenms/librenms. Confirm the publisher’s latest guidance.","source_ids":["sr-5fc1f6466ad248649bf870c12aef561d"],"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":"2026-08-26T18:05:47.000Z","value":"7.1 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-15072ff3fa4c61cb7f205d147b333ef8"},{"kind":"EPSS","as_of":"2026-11-03T12:00:27.000Z","value":"0.331%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.26331. Missing scores are unknown.","source_id":"sr-201670b6c07e966c1811491b39eebb59"}],"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-15072ff3fa4c61cb7f205d147b333ef8","url":"https://github.com/advisories/GHSA-7w8c-qgxg-m7jx","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-7w8c-qgxg-m7jx","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T09:56:23.004Z"},{"id":"sr-5fc1f6466ad248649bf870c12aef561d","url":"https://github.com/advisories/GHSA-7w8c-qgxg-m7jx","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-7w8c-qgxg-m7jx","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:59.955Z"},{"id":"sr-201670b6c07e966c1811491b39eebb59","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-2026-84192","publisher":"FIRST EPSS","observed_at":"2026-11-03T17:45:16.083Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-15072ff3fa4c61cb7f205d147b333ef8"],"technology":"librenms/librenms","known_exclusions":[],"conditions_summary":"## Summary\n\nMultiple legacy PHP template files in LibreNMS directly output SNMP-sourced and syslog-sourced data into HTML without escaping. An attacker who controls a monitored network device (via compromised SNMP agent or syslog sender) can inject arbitrary JavaScript that executes when any authenticated LibreNMS user views the affected pages.\n\n## Vulnerable Code\n\n### Location 1: Syslog `program` field (clearest instance)\n\n**File:** `includes/html/print-syslog.inc.php:11,13`\n\n```php\n$syslog_output .= '' . $entry['program'] . ' :  ' . htmlspecialchars((string) $entry['msg']) . '';\n```\n\nThe `program` field is output without `htmlspecialchars()` while the adjacent `msg` field IS properly escaped. The `program` value comes from syslog messages received from monitored devices.\n\n### Location 2: Alert details `ifAlias` (highest impact — main alerts page)\n\n**File:** `includes/html/functions.inc.php:607`\n\n```php\n$fault_detail .= $tmp_alerts['ifAlias'] . '; ';\n```\n\nThe `ifAlias` (port description) comes from SNMP polling and is stored in the `ports` table. When a port-related alert fires, `format_alert_details()` renders it unescaped. Multiple other fields in this ","public_affected_ranges":["< 26.5.0"]},{"certainty":"source_listed","source_ids":["sr-5fc1f6466ad248649bf870c12aef561d"],"technology":"librenms/librenms","known_exclusions":[],"conditions_summary":"## Summary\n\nMultiple legacy PHP template files in LibreNMS directly output SNMP-sourced and syslog-sourced data into HTML without escaping. An attacker who controls a monitored network device (via compromised SNMP agent or syslog sender) can inject arbitrary JavaScript that executes when any authenticated LibreNMS user views the affected pages.\n\n## Vulnerable Code\n\n### Location 1: Syslog `program` field (clearest instance)\n\n**File:** `includes/html/print-syslog.inc.php:11,13`\n\n```php\n$syslog_output .= '' . $entry['program'] . ' :  ' . htmlspecialchars((string) $entry['msg']) . '';\n```\n\nThe `program` field is output without `htmlspecialchars()` while the adjacent `msg` field IS properly escaped. The `program` value comes from syslog messages received from monitored devices.\n\n### Location 2: Alert details `ifAlias` (highest impact — main alerts page)\n\n**File:** `includes/html/functions.inc.php:607`\n\n```php\n$fault_detail .= $tmp_alerts['ifAlias'] . '; ';\n```\n\nThe `ifAlias` (port description) comes from SNMP polling and is stored in the `ports` table. When a port-related alert fires, `format_alert_details()` renders it unescaped. Multiple other fields in this ","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 26.5.0"]}],"null_published_at":"2026-11-07T14:01:55.424Z","source_updated_at":"2026-08-26T18:05:47.000Z","source_disclosed_at":"2026-08-26T18:05:46.000Z","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":"2026-10-31T21:41:59.955Z"},{"id":"NVI-00004279","kind":"vulnerability","title":"LibreNMS — Stored XSS via SNMP/Syslog Data in Legacy Templates","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-7w8c-qgxg-m7jx","CVE-2026-84192"],"plain_summary":"GitHub lists this reviewed advisory for librenms/librenms. 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-44e6f643f6e151aa713410eda8349a4b"],"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 26.5.0 for librenms/librenms. Confirm the publisher’s latest guidance.","source_ids":["sr-5fc1f6466ad248649bf870c12aef561d"],"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":"2026-08-26T18:05:47.000Z","value":"7.1 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-15072ff3fa4c61cb7f205d147b333ef8"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.331%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.26307. Missing scores are unknown.","source_id":"sr-44e6f643f6e151aa713410eda8349a4b"}],"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-15072ff3fa4c61cb7f205d147b333ef8","url":"https://github.com/advisories/GHSA-7w8c-qgxg-m7jx","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-7w8c-qgxg-m7jx","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T09:56:23.004Z"},{"id":"sr-5fc1f6466ad248649bf870c12aef561d","url":"https://github.com/advisories/GHSA-7w8c-qgxg-m7jx","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-7w8c-qgxg-m7jx","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:59.955Z"},{"id":"sr-44e6f643f6e151aa713410eda8349a4b","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-2026-84192","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.385Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-15072ff3fa4c61cb7f205d147b333ef8"],"technology":"librenms/librenms","known_exclusions":[],"conditions_summary":"## Summary\n\nMultiple legacy PHP template files in LibreNMS directly output SNMP-sourced and syslog-sourced data into HTML without escaping. An attacker who controls a monitored network device (via compromised SNMP agent or syslog sender) can inject arbitrary JavaScript that executes when any authenticated LibreNMS user views the affected pages.\n\n## Vulnerable Code\n\n### Location 1: Syslog `program` field (clearest instance)\n\n**File:** `includes/html/print-syslog.inc.php:11,13`\n\n```php\n$syslog_output .= '' . $entry['program'] . ' :  ' . htmlspecialchars((string) $entry['msg']) . '';\n```\n\nThe `program` field is output without `htmlspecialchars()` while the adjacent `msg` field IS properly escaped. The `program` value comes from syslog messages received from monitored devices.\n\n### Location 2: Alert details `ifAlias` (highest impact — main alerts page)\n\n**File:** `includes/html/functions.inc.php:607`\n\n```php\n$fault_detail .= $tmp_alerts['ifAlias'] . '; ';\n```\n\nThe `ifAlias` (port description) comes from SNMP polling and is stored in the `ports` table. When a port-related alert fires, `format_alert_details()` renders it unescaped. Multiple other fields in this ","public_affected_ranges":["< 26.5.0"]},{"certainty":"source_listed","source_ids":["sr-5fc1f6466ad248649bf870c12aef561d"],"technology":"librenms/librenms","known_exclusions":[],"conditions_summary":"## Summary\n\nMultiple legacy PHP template files in LibreNMS directly output SNMP-sourced and syslog-sourced data into HTML without escaping. An attacker who controls a monitored network device (via compromised SNMP agent or syslog sender) can inject arbitrary JavaScript that executes when any authenticated LibreNMS user views the affected pages.\n\n## Vulnerable Code\n\n### Location 1: Syslog `program` field (clearest instance)\n\n**File:** `includes/html/print-syslog.inc.php:11,13`\n\n```php\n$syslog_output .= '' . $entry['program'] . ' :  ' . htmlspecialchars((string) $entry['msg']) . '';\n```\n\nThe `program` field is output without `htmlspecialchars()` while the adjacent `msg` field IS properly escaped. The `program` value comes from syslog messages received from monitored devices.\n\n### Location 2: Alert details `ifAlias` (highest impact — main alerts page)\n\n**File:** `includes/html/functions.inc.php:607`\n\n```php\n$fault_detail .= $tmp_alerts['ifAlias'] . '; ';\n```\n\nThe `ifAlias` (port description) comes from SNMP polling and is stored in the `ports` table. When a port-related alert fires, `format_alert_details()` renders it unescaped. Multiple other fields in this ","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 26.5.0"]}],"null_published_at":"2026-11-02T10:00:37.166Z","source_updated_at":"2026-08-26T18:05:47.000Z","source_disclosed_at":"2026-08-26T18:05:46.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:41:59.955Z"},{"id":"NVI-00004279","kind":"vulnerability","title":"LibreNMS — Stored XSS via SNMP/Syslog Data in Legacy Templates","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-7w8c-qgxg-m7jx","CVE-2026-84192"],"plain_summary":"OSV carries this publisher advisory for librenms/librenms. 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 26.5.0 for librenms/librenms. Confirm the publisher’s latest guidance.","source_ids":["sr-5fc1f6466ad248649bf870c12aef561d"],"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},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-44e6f643f6e151aa713410eda8349a4b"],"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}],"schema_version":"1.1.0","source_metrics":[{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.331%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.26307. Missing scores are unknown.","source_id":"sr-44e6f643f6e151aa713410eda8349a4b"}],"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-5fc1f6466ad248649bf870c12aef561d","url":"https://github.com/advisories/GHSA-7w8c-qgxg-m7jx","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-7w8c-qgxg-m7jx","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:59.955Z"},{"id":"sr-44e6f643f6e151aa713410eda8349a4b","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-2026-84192","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.385Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-5fc1f6466ad248649bf870c12aef561d"],"technology":"librenms/librenms","known_exclusions":[],"conditions_summary":"## Summary\n\nMultiple legacy PHP template files in LibreNMS directly output SNMP-sourced and syslog-sourced data into HTML without escaping. An attacker who controls a monitored network device (via compromised SNMP agent or syslog sender) can inject arbitrary JavaScript that executes when any authenticated LibreNMS user views the affected pages.\n\n## Vulnerable Code\n\n### Location 1: Syslog `program` field (clearest instance)\n\n**File:** `includes/html/print-syslog.inc.php:11,13`\n\n```php\n$syslog_output .= '' . $entry['program'] . ' :  ' . htmlspecialchars((string) $entry['msg']) . '';\n```\n\nThe `program` field is output without `htmlspecialchars()` while the adjacent `msg` field IS properly escaped. The `program` value comes from syslog messages received from monitored devices.\n\n### Location 2: Alert details `ifAlias` (highest impact — main alerts page)\n\n**File:** `includes/html/functions.inc.php:607`\n\n```php\n$fault_detail .= $tmp_alerts['ifAlias'] . '; ';\n```\n\nThe `ifAlias` (port description) comes from SNMP polling and is stored in the `ports` table. When a port-related alert fires, `format_alert_details()` renders it unescaped. Multiple other fields in this ","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 26.5.0"]}],"null_published_at":"2026-10-31T23:18:17.230Z","source_updated_at":"2026-09-02T03:55:41.550Z","source_disclosed_at":"2026-08-26T18:05:46.000Z","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":"2026-10-31T21:41:59.955Z"},{"id":"NVI-00004279","kind":"vulnerability","title":"LibreNMS — Stored XSS via SNMP/Syslog Data in Legacy Templates","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-7w8c-qgxg-m7jx","CVE-2026-84192"],"plain_summary":"OSV carries this publisher advisory for librenms/librenms. 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 26.5.0 for librenms/librenms. Confirm the publisher’s latest guidance.","source_ids":["sr-5fc1f6466ad248649bf870c12aef561d"],"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-5fc1f6466ad248649bf870c12aef561d","url":"https://github.com/advisories/GHSA-7w8c-qgxg-m7jx","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-7w8c-qgxg-m7jx","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:59.955Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-5fc1f6466ad248649bf870c12aef561d"],"technology":"librenms/librenms","known_exclusions":[],"conditions_summary":"## Summary\n\nMultiple legacy PHP template files in LibreNMS directly output SNMP-sourced and syslog-sourced data into HTML without escaping. An attacker who controls a monitored network device (via compromised SNMP agent or syslog sender) can inject arbitrary JavaScript that executes when any authenticated LibreNMS user views the affected pages.\n\n## Vulnerable Code\n\n### Location 1: Syslog `program` field (clearest instance)\n\n**File:** `includes/html/print-syslog.inc.php:11,13`\n\n```php\n$syslog_output .= '' . $entry['program'] . ' :  ' . htmlspecialchars((string) $entry['msg']) . '';\n```\n\nThe `program` field is output without `htmlspecialchars()` while the adjacent `msg` field IS properly escaped. The `program` value comes from syslog messages received from monitored devices.\n\n### Location 2: Alert details `ifAlias` (highest impact — main alerts page)\n\n**File:** `includes/html/functions.inc.php:607`\n\n```php\n$fault_detail .= $tmp_alerts['ifAlias'] . '; ';\n```\n\nThe `ifAlias` (port description) comes from SNMP polling and is stored in the `ports` table. When a port-related alert fires, `format_alert_details()` renders it unescaped. Multiple other fields in this ","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 26.5.0"]}],"null_published_at":"2026-10-31T22:12:52.639Z","source_updated_at":"2026-09-02T03:55:41.550Z","source_disclosed_at":"2026-08-26T18:05:46.000Z","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":"2026-10-31T21:41:59.955Z"}],"next_cursor":null,"snapshot_revision":"42594"}