CVE-2026-67353

Name	CVE-2026-67353
Description	guzzlehttp/guzzle versions before 7.15.1 contain a denial of service vulnerability in the CookieJar that accepts unlimited Set-Cookie header fields with no size restrictions. Attackers can return many large cookies from a malicious server, causing Guzzle to store excessive data in memory and generate oversized Cookie headers that fail in handlers or destination servers.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
guzzle (PTS)	bookworm	7.4.5-1	vulnerable
	trixie	7.9.2-0.1	vulnerable
	forky, sid	7.15.3-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
guzzle	source	(unstable)	7.15.1-1

[trixie] - guzzle <no-dsa> (Minor issue)
https://github.com/guzzle/guzzle/security/advisories/GHSA-f283-ghqc-fg79