Vulnerability in Varnish_cache_project Varnish_cache
CVE-2025-30346
Varnish Cache before 7.6.2 and Varnish Enterprise before 6.0.13r10 allow client-side desync via HTTP/1 requests.
Vulnerability class: HTTP Request Smuggling
EPSS: 0.003 (20.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N.
Affected products
- Varnish_cache_project Varnish_cache
- Varnish-software Varnish Cache — versions 7.5.0
- Varnish-software Varnish_enterprise — versions 6.0.11, 6.0.12, 6.0.13
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2025-30346?
- CVE-2025-30346 is a medium-severity vulnerability in Varnish_cache_project Varnish_cache, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 5.4/10. Published 2025-03-21.
- How severe is CVE-2025-30346?
- Medium severity. CVSS v3 base score is 5.4 out of 10.
- Is CVE-2025-30346 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.