CVE-2026-34475

Name	CVE-2026-34475
Description	Varnish Cache before 8.0.1 and Varnish Enterprise before 6.0.16r12, in certain unchecked req.url scenarios, mishandle URLs with a path of / for HTTP/1.1, potentially leading to cache poisoning or authentication bypass.
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
varnish (PTS)	bullseye	6.5.1-1+deb11u3	vulnerable
	bullseye (security)	6.5.1-1+deb11u5	vulnerable
	bookworm, bookworm (security)	7.1.1-2+deb12u1	vulnerable
	trixie	7.7.0-3	vulnerable
	forky, sid	7.7.3-2	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
varnish	source	(unstable)	(unfixed)

https://vinyl-cache.org/security/VSV00018.html