CVE-2025-30346

MEDIUM

Published Mar 21, 2025 Modified Apr 2, 2025 CWE-444

Description

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

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CVSS v3.1 Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-444 CWE-444

Affected Products

Vendor	Product	Versions
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish-software	varnish_enterprise	All
varnish_cache_project	varnish_cache	< 7.6.2

References

Advisories & Patches

https://varnish-cache.org/security/VSV00015.html

Other References

https://lists.debian.org/debian-lts-announce/2025/03/msg00027.html

Frequently Asked Questions

What is CVE-2025-30346? +

Varnish Cache before 7.6.2 and Varnish Enterprise before 6.0.13r10 allow client-side desync via HTTP/1 requests. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2025-30346? +

CVE-2025-30346 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-30346? +

CVE-2025-30346 affects products from varnish-software, varnish_cache_project, specifically: varnish_cache, varnish_enterprise. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-30346? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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