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.

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Fixes

Solution

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Workaround

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History

Fri, 27 Mar 2026 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 27 Mar 2026 20:00:00 +0000

Type Values Removed Values Added
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.
First Time appeared Varnish-software
Varnish-software varnish Cache
Weaknesses CWE-180
CPEs cpe:2.3:a:varnish-software:varnish_cache:*:*:*:*:*:*:*:*
Vendors & Products Varnish-software
Varnish-software varnish Cache
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-03-27T20:01:11.327Z

Reserved: 2026-03-27T19:40:27.986Z

Link: CVE-2026-34475

cve-icon Vulnrichment

Updated: 2026-03-27T20:01:02.764Z

cve-icon NVD

Status : Received

Published: 2026-03-27T20:16:36.390

Modified: 2026-03-27T20:16:36.390

Link: CVE-2026-34475

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses