5.4

CVE-2025-30346: varnish_cache_project varnish_cache HTTP Request/Response Smuggling

CVSS: 5.4v3.1MediumModified
AliasesALPINE-CVE-2025-30346UBUNTU-CVE-2025-30346DEBIAN-CVE-2025-30346
Published 21-03-2025Last modified 03-04-2025
Open JSON

Vulnerability summary

CVE-2025-30346 is a medium (CVSS 5.4) HTTP Request/Response Smuggling vulnerability in varnish_cache_project varnish_cache. EPSS estimates a 0.31% chance of exploitation in the next 30 days, higher than 22.7% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.31%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 1
DSA-5918-1OPENSUSE-SU-2026:10751-1

Timeline

  1. 21-03-2025
    PublishedVulnerability first disclosed.
  2. 03-04-2025
    Last modifiedVulnerability information updated.

Description

Varnish Cache before 7.6.2 and Varnish Enterprise before 6.0.13r10 allow client-side desync via HTTP/1 requests.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.31%

Chance of exploitation in the next 30 days

Percentile

23%

Versus all other CVEs

30-day change

+0.01 pp

From 0.30% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.31%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Varnish-software2 products
  • varnish_cache≥ 7.5.0, < 7.6.2
  • varnish_enterprise6.0.11:r1 | 6.0.11:r2 | 6.0.11:r3 | 6.0.11:r4 | 6.0.11:r5 | 6.0.11:r6 | 6.0.11:r7 | 6.0.12:r1 | 6.0.12:r2 | 6.0.12:r3 | 6.0.12:r4 | 6.0.12:r5 | 6.0.12:r6 | 6.0.12:r7 | 6.0.12:r8 | 6.0.12:r9 | 6.0.13:r1 | 6.0.13:r2 | 6.0.13:r3 | 6.0.13:r4 | 6.0.13:r5 | 6.0.13:r6 | 6.0.13:r7 | 6.0.13:r8 | 6.0.13:r9
Alpine1 product
  • varnish< 7.6.3-r0 | < 7.7.0-r0
Debian1 product
  • varnish< 7.1.1-2+deb12u1 | < 7.7.0-1 | < 6.5.1-1+deb11u4
Opensuse1 product
  • varnish&distro=openSUSE Tumbleweed< 7.7.0-1.1
Ubuntu1 product
  • varnishAll versions (No fix recorded)
Varnish_cache_project1 product

6 vendors · 7 products

References

10 links