Bug 2452408 (CVE-2026-34475) - CVE-2026-34475 Varnish Cache: Varnish Cache and Varnish Enterprise: Cache poisoning and authentication bypass via unchecked URL handling
Summary: CVE-2026-34475 Varnish Cache: Varnish Cache and Varnish Enterprise: Cache poi...
Keywords:
Status: NEW
Alias: CVE-2026-34475
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-27 20:01 UTC by OSIDB Bzimport
Modified: 2026-04-01 14:19 UTC (History)
0 users

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Description OSIDB Bzimport 2026-03-27 20:01:55 UTC 
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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