Vulnerability · Published Mar 21, 2025 · Assigned by mitre
CVE-2025-30346
Medium 5.4
In plain English
A medium-severity security flaw in Varnish Cache from varnish-software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.4Medium
Exploit odds (30 days)0.3%top 75.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Varnish Cache before 7.6.2 and Varnish Enterprise before 6.0.13r10 allow client-side desync via HTTP/1 requests.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.21 | varnish | 7.6.3-r0 | ALPINE-CVE-2025-30346 |
| Alpine:v3.22 | varnish | 7.7.0-r0 | ALPINE-CVE-2025-30346 |
| Alpine:v3.23 | varnish | 7.7.0-r0 | ALPINE-CVE-2025-30346 |
| Alpine:v3.24 | varnish | 7.7.0-r0 | ALPINE-CVE-2025-30346 |
| Debian:12 | varnish | 7.1.1-2+deb12u1 | DEBIAN-CVE-2025-30346 |
| Debian:12 | varnish | 7.1.1-2+deb12u1 | DSA-5918-1 |
| Debian:13 | varnish | 7.7.0-1 | DEBIAN-CVE-2025-30346 |
| Ubuntu:24.04:LTS | varnish | no fix listed | UBUNTU-CVE-2025-30346 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| varnish-software | Varnish Cache | 7.5.0 – before 7.6.2 |
Weakness: CWE-444 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N