This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-59882 →

DEBIAN-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 con...

Original description

The description as published by the source.

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: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 php-guzzlehttp-psr7

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 php-guzzlehttp-psr7

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 php-guzzlehttp-psr7

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.12.3-1"}]}]

References

advisory security-tracker.debian.org