{"items":[{"id":"NVI-00004977","kind":"vulnerability","title":"guzzlehttp/psr7 has Host Confusion via Authority Reinterpretation","revision":3,"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-34xg-wgjx-8xph","CVE-2026-48998"],"plain_summary":"OSV carries this publisher advisory for guzzlehttp/psr7. 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 2.10.2 for guzzlehttp/psr7. Confirm the publisher’s latest guidance.","source_ids":["sr-7bac5b02adb11e8a33f75ec205e4210d"],"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-acd91ea67f837c139c4f03b80259efe5"],"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":"CVSS","as_of":"2026-10-26T11:10:00.157Z","value":"5.3 MEDIUM (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-ccee729dfceb9aadaa2e860ed0966834"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.198%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.09634. Missing scores are unknown.","source_id":"sr-acd91ea67f837c139c4f03b80259efe5"}],"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-7bac5b02adb11e8a33f75ec205e4210d","url":"https://github.com/advisories/GHSA-34xg-wgjx-8xph","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-34xg-wgjx-8xph","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.650Z"},{"id":"sr-ccee729dfceb9aadaa2e860ed0966834","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48998","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-48998","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:22.913Z"},{"id":"sr-acd91ea67f837c139c4f03b80259efe5","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-2026-48998","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.381Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-7bac5b02adb11e8a33f75ec205e4210d"],"technology":"guzzlehttp/psr7","known_exclusions":[],"conditions_summary":"## Impact\n\n`guzzlehttp/psr7` improperly interpreted malformed `Host` header values when constructing request URIs from inbound request data. This issue concerns inbound request parsing and server request construction. It does not require serializing a PSR-7 request, and it is not part of the normal outbound request-sending path used by `guzzlehttp/guzzle`.\n\nA vulnerable flow is:\n\n1. An attacker controls a raw HTTP request or server variable containing a `Host` value.\n2. The `Host` value contains URI authority delimiters, such as `trusted.example@evil.example`.\n3. `guzzlehttp/psr7` uses that value to construct a URI.\n4. The URI parser treats the portion before `@` as userinfo and the portion after `@` as the URI host.\n5. The resulting PSR-7 request URI host differs from the original `Host` header value.\n\nFor example, `Host: trusted.example@evil.example` can result in a PSR-7 URI whose host is `evil.example`, while the original Host header value remains `trusted.example@evil.example`.\n\nApplications are affected if they parse attacker-controlled raw HTTP requests with `GuzzleHttp\\Psr7\\Message::parseRequest()` or the legacy 1.x `GuzzleHttp\\Psr7\\parse_request()` function, or if they bui","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.10.2"]}],"null_published_at":"2026-11-07T22:29:23.431Z","source_updated_at":"2026-09-10T03:51:07.670Z","source_disclosed_at":"2026-06-11T13:04:53.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:41:49.650Z"},{"id":"NVI-00004977","kind":"vulnerability","title":"guzzlehttp/psr7 has Host Confusion via Authority Reinterpretation","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-34xg-wgjx-8xph","CVE-2026-48998"],"plain_summary":"OSV carries this publisher advisory for guzzlehttp/psr7. 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 2.10.2 for guzzlehttp/psr7. Confirm the publisher’s latest guidance.","source_ids":["sr-7bac5b02adb11e8a33f75ec205e4210d"],"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-acd91ea67f837c139c4f03b80259efe5"],"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":"0.198%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.09634. Missing scores are unknown.","source_id":"sr-acd91ea67f837c139c4f03b80259efe5"}],"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-7bac5b02adb11e8a33f75ec205e4210d","url":"https://github.com/advisories/GHSA-34xg-wgjx-8xph","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-34xg-wgjx-8xph","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.650Z"},{"id":"sr-acd91ea67f837c139c4f03b80259efe5","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-2026-48998","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.381Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-7bac5b02adb11e8a33f75ec205e4210d"],"technology":"guzzlehttp/psr7","known_exclusions":[],"conditions_summary":"## Impact\n\n`guzzlehttp/psr7` improperly interpreted malformed `Host` header values when constructing request URIs from inbound request data. This issue concerns inbound request parsing and server request construction. It does not require serializing a PSR-7 request, and it is not part of the normal outbound request-sending path used by `guzzlehttp/guzzle`.\n\nA vulnerable flow is:\n\n1. An attacker controls a raw HTTP request or server variable containing a `Host` value.\n2. The `Host` value contains URI authority delimiters, such as `trusted.example@evil.example`.\n3. `guzzlehttp/psr7` uses that value to construct a URI.\n4. The URI parser treats the portion before `@` as userinfo and the portion after `@` as the URI host.\n5. The resulting PSR-7 request URI host differs from the original `Host` header value.\n\nFor example, `Host: trusted.example@evil.example` can result in a PSR-7 URI whose host is `evil.example`, while the original Host header value remains `trusted.example@evil.example`.\n\nApplications are affected if they parse attacker-controlled raw HTTP requests with `GuzzleHttp\\Psr7\\Message::parseRequest()` or the legacy 1.x `GuzzleHttp\\Psr7\\parse_request()` function, or if they bui","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.10.2"]}],"null_published_at":"2026-11-05T03:52:54.765Z","source_updated_at":"2026-09-10T03:51:07.670Z","source_disclosed_at":"2026-06-11T13:04:53.000Z","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":"2026-10-31T21:41:49.650Z"},{"id":"NVI-00004977","kind":"vulnerability","title":"guzzlehttp/psr7 has Host Confusion via Authority Reinterpretation","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-34xg-wgjx-8xph","CVE-2026-48998"],"plain_summary":"OSV carries this publisher advisory for guzzlehttp/psr7. 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 2.10.2 for guzzlehttp/psr7. Confirm the publisher’s latest guidance.","source_ids":["sr-7bac5b02adb11e8a33f75ec205e4210d"],"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-7bac5b02adb11e8a33f75ec205e4210d","url":"https://github.com/advisories/GHSA-34xg-wgjx-8xph","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-34xg-wgjx-8xph","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.650Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-7bac5b02adb11e8a33f75ec205e4210d"],"technology":"guzzlehttp/psr7","known_exclusions":[],"conditions_summary":"## Impact\n\n`guzzlehttp/psr7` improperly interpreted malformed `Host` header values when constructing request URIs from inbound request data. This issue concerns inbound request parsing and server request construction. It does not require serializing a PSR-7 request, and it is not part of the normal outbound request-sending path used by `guzzlehttp/guzzle`.\n\nA vulnerable flow is:\n\n1. An attacker controls a raw HTTP request or server variable containing a `Host` value.\n2. The `Host` value contains URI authority delimiters, such as `trusted.example@evil.example`.\n3. `guzzlehttp/psr7` uses that value to construct a URI.\n4. The URI parser treats the portion before `@` as userinfo and the portion after `@` as the URI host.\n5. The resulting PSR-7 request URI host differs from the original `Host` header value.\n\nFor example, `Host: trusted.example@evil.example` can result in a PSR-7 URI whose host is `evil.example`, while the original Host header value remains `trusted.example@evil.example`.\n\nApplications are affected if they parse attacker-controlled raw HTTP requests with `GuzzleHttp\\Psr7\\Message::parseRequest()` or the legacy 1.x `GuzzleHttp\\Psr7\\parse_request()` function, or if they bui","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.10.2"]}],"null_published_at":"2026-10-31T22:12:57.149Z","source_updated_at":"2026-09-10T03:51:07.670Z","source_disclosed_at":"2026-06-11T13:04:53.000Z","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":"2026-10-31T21:41:49.650Z"}],"next_cursor":null,"snapshot_revision":"42594"}