CVE-2025-47905

Published: May 13, 2025Modified: Jun 17, 2026Deferred

5.4

Vector

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

Exploitability: 2.2 / Impact: 2.7

Source: MITRE (Secondary)

Description

Varnish Cache before 7.6.3 and 7.7 before 7.7.1, and Varnish Enterprise before 6.0.13r14, allow client-side desync via HTTP/1 requests, because the product incorrectly permits CRLF to be skipped to delimit chunk boundaries.

Related CWEs

CWE-444

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

References (3)

https://varnish-cache.org/security/VSV00016.html

Source: cve@mitre.org

http://www.openwall.com/lists/oss-security/2025/05/15/2

Source: af854a3a-2127-422b-91ae-364da2661108

https://lists.debian.org/debian-lts-announce/2025/05/msg00040.html

Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

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