CVEvulnerability

CVE-2026-34475

9.8 CRITICAL Published 2026-03-27 Modified 2026-10-26 Official page ↗
Status
Analyzed
Published
2026-03-27
Last modified
2026-10-26
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.4 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-180

Description

Varnish Cache before 8.0.1 and Varnish Enterprise before 6.0.16r12, in certain unchecked req.url scenarios, mishandle URLs with a path of / for HTTP/1.1, potentially leading to cache poisoning or authentication bypass.

Affected configurations

• varnish-software varnish enterprise (<= 6.0.15) • varnish-software varnish enterprise 6.0.16 • vinyl-cache vinyl cache (< 8.0.1)

Related

Weakness · CWE (1)

  • CWE-180 Incorrect Behavior Order: Validate Before Canonicalize weakness

References