CVE Explorer
CVE-2026-59882
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.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"psr7","vendor":"guzzle","versions":[{"status":"affected","version":"< 2.12.3"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:a8318a10d9de561c32a37e46c4b85388989bf09ae79b7fb9dc513cfce87456d6 · sha256:2e7fb0e2a2aeced1… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"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"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:a8318a10d9de561c32a37e46c4b85388989bf09ae79b7fb9dc513cfce87456d6 · sha256:2e7fb0e2a2aeced1… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-436","description":"CWE-436: Interpretation Conflict","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:a8318a10d9de561c32a37e46c4b85388989bf09ae79b7fb9dc513cfce87456d6 · sha256:2e7fb0e2a2aeced1… · /containers/cna/problemTypes/0/descriptions/0
Source references
4 source assertions{"name":"https://github.com/guzzle/psr7/commit/ddd64f17d4cc1f7e5ffe6fd2c989ec7221712580","tags":["x_refsource_MISC"],"url":"https://github.com/guzzle/psr7/commit/ddd64f17d4cc1f7e5ffe6fd2c989ec7221712580"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a8318a10d9de561c32a37e46c4b85388989bf09ae79b7fb9dc513cfce87456d6 · sha256:2e7fb0e2a2aeced1… · /containers/cna/references/2
{"name":"https://github.com/guzzle/psr7/pull/811","tags":["x_refsource_MISC"],"url":"https://github.com/guzzle/psr7/pull/811"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a8318a10d9de561c32a37e46c4b85388989bf09ae79b7fb9dc513cfce87456d6 · sha256:2e7fb0e2a2aeced1… · /containers/cna/references/1
{"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"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a8318a10d9de561c32a37e46c4b85388989bf09ae79b7fb9dc513cfce87456d6 · sha256:2e7fb0e2a2aeced1… · /containers/cna/references/3
{"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"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a8318a10d9de561c32a37e46c4b85388989bf09ae79b7fb9dc513cfce87456d6 · sha256:2e7fb0e2a2aeced1… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.