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CVE-2026-59882
4.2 MEDIUM
- CVSS version (CVSS): 3.1
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): High (H)
- Privileges Required (PR): None (N)
- User Interaction (UI): Required (R)
- Scope (S): Unchanged (U)
- Confidentiality (C): Low (L)
- Integrity (I): Low (L)
- Availability (A): None (N)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): High (H)
- Modified Privileges Required (MPR): None (N)
- Modified User Interaction (MUI): Required (R)
- Modified Confidentiality (MC): Low (L)
- Modified Scope (MS): Unchanged (U)
- Modified Integrity (MI): Low (L)
- Modified Availability (MA): None (N)
Activity log
- Created & dismissed (no matching packages found) suggestion
guzzlehttp/psr7: Host Confusion via Weak URI Host Validation
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.
References
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https://github.com/guzzle/psr7/security/advisories/GHSA-c2w2-prh8-qm98 x_refsource_CONFIRM
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https://github.com/guzzle/psr7/pull/811 x_refsource_MISC
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https://github.com/guzzle/psr7/releases/tag/2.12.3 x_refsource_MISC
Affected products
psr7
- ==< 2.12.3