php-guzzlehttp-psr7: guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP
CVE-2026-59882 is fixed in php-guzzlehttp-psr7 on 1 platform by DEBIAN-CVE-2026-59882 (version 2.12.3-1), released July 9, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| php-guzzlehttp-psr7 · Debian 14 | 2.12.3-1 | DEBIAN-CVE-2026-59882 | Jul 9, 2026 |
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