Bug 2538846 (CVE-2026-93750) - CVE-2026-93750 http-cache-semantics: http-cache-semantics: Information disclosure via improper Vary header wildcard validation
Summary: CVE-2026-93750 http-cache-semantics: http-cache-semantics: Information disclo...
Keywords:
Status: NEW
Alias: CVE-2026-93750
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-22 20:53 UTC by OSIDB Bzimport
Modified: 2026-09-29 15:34 UTC (History)
135 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-09-22 20:53:30 UTC 
http-cache-semantics through 4.2.0 contains a cache validation vulnerability in the _varyMatches() function that fails to properly validate Vary header wildcards due to byte-for-byte string comparison. Attackers can request URLs previously fetched by other clients to receive cached responses intended for different users, disclosing sensitive information across clients.
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