CVE-2025-30346

Varnish Cache before 7.6.2 and Varnish Enterprise before 6.0.13r10 allow client-side desync via HTTP/1 requests.
HTTP Request/Response Smuggling
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.4 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
mitreCNA
5.4 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 7%
VendorProductVersion
varnish-softwarevarnish_enterprise
6.0.11:r1
varnish-softwarevarnish_enterprise
6.0.11:r2
varnish-softwarevarnish_enterprise
6.0.11:r3
varnish-softwarevarnish_enterprise
6.0.11:r4
varnish-softwarevarnish_enterprise
6.0.11:r5
varnish-softwarevarnish_enterprise
6.0.11:r6
varnish-softwarevarnish_enterprise
6.0.11:r7
varnish-softwarevarnish_enterprise
6.0.12:r1
varnish-softwarevarnish_enterprise
6.0.12:r2
varnish-softwarevarnish_enterprise
6.0.12:r3
varnish-softwarevarnish_enterprise
6.0.12:r4
varnish-softwarevarnish_enterprise
6.0.12:r5
varnish-softwarevarnish_enterprise
6.0.12:r6
varnish-softwarevarnish_enterprise
6.0.12:r7
varnish-softwarevarnish_enterprise
6.0.12:r8
varnish-softwarevarnish_enterprise
6.0.12:r9
varnish-softwarevarnish_enterprise
6.0.13:r1
varnish-softwarevarnish_enterprise
6.0.13:r2
varnish-softwarevarnish_enterprise
6.0.13:r3
varnish-softwarevarnish_enterprise
6.0.13:r4
varnish-softwarevarnish_enterprise
6.0.13:r5
varnish-softwarevarnish_enterprise
6.0.13:r6
varnish-softwarevarnish_enterprise
6.0.13:r7
varnish-softwarevarnish_enterprise
6.0.13:r8
varnish-softwarevarnish_enterprise
6.0.13:r9
varnish_cache_projectvarnish_cache
𝑥
< 7.6.2
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
varnish
bullseye
vulnerable
bullseye (security)
6.5.1-1+deb11u4
fixed
bookworm
vulnerable
sid
7.7.0-1
fixed
trixie
7.7.0-1
fixed