{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-59882","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-07-07T16:40:07.982Z","datePublished":"2026-07-08T15:50:03.077Z","dateUpdated":"2026-07-08T17:00:22.945Z"},"containers":{"cna":{"title":"guzzlehttp/psr7: Host Confusion via Weak URI Host Validation","problemTypes":[{"descriptions":[{"cweId":"CWE-436","lang":"en","description":"CWE-436: Interpretation Conflict","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.2,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/guzzle/psr7/security/advisories/GHSA-c2w2-prh8-qm98","tags":["x_refsource_CONFIRM"],"url":"https://github.com/guzzle/psr7/security/advisories/GHSA-c2w2-prh8-qm98"},{"name":"https://github.com/guzzle/psr7/pull/811","tags":["x_refsource_MISC"],"url":"https://github.com/guzzle/psr7/pull/811"},{"name":"https://github.com/guzzle/psr7/commit/ddd64f17d4cc1f7e5ffe6fd2c989ec7221712580","tags":["x_refsource_MISC"],"url":"https://github.com/guzzle/psr7/commit/ddd64f17d4cc1f7e5ffe6fd2c989ec7221712580"},{"name":"https://github.com/guzzle/psr7/releases/tag/2.12.3","tags":["x_refsource_MISC"],"url":"https://github.com/guzzle/psr7/releases/tag/2.12.3"}],"affected":[{"vendor":"guzzle","product":"psr7","versions":[{"version":"< 2.12.3","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-08T15:50:03.077Z"},"descriptions":[{"lang":"en","value":"guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Prior to 2.12.3, Uri::assertValidHost() does not reject URI host components containing authority delimiters, embedded ports, or malformed IPv6 brackets, allowing Uri::getHost() to disagree with the URI authority used for security or routing decisions. This issue is fixed in version 2.12.3."}],"source":{"advisory":"GHSA-c2w2-prh8-qm98","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-08T16:50:26.023312Z","id":"CVE-2026-59882","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-08T17:00:22.945Z"}}]}}