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Vulnerability record · CVE-2025-30346 · published 21 March 2025

CVE-2025-30346: Varnish-software varnish enterprise http request smuggling vulnerability

Varnish Software · Varnish Enterprise

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

4.8 CVSS 3.1 Medium EPSS 0.31% · top 79.0% CWE-444 · HTTP request smuggling
4.8CVSS 3.1 base score
0.31%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

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

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://varnish-cache.org/security/VSV00015.html Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/03/msg00027.html

Track CVE-2025-30346 inside VULONE

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-30346), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.