Bug 2544875 (CVE-2026-104056) - CVE-2026-104056 authlib: authlib: Information disclosure via unvalidated discovery metadata
Summary: CVE-2026-104056 authlib: authlib: Information disclosure via unvalidated disc...
Keywords:
Status: NEW
Alias: CVE-2026-104056
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: 2026-10-01 23:11 UTC by OSIDB Bzimport
Modified: 2026-10-01 23:37 UTC (History)
47 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-10-01 23:11:54 UTC 
Authlib version 1.7.2 and below contains a vulnerability where discovery JSON metadata is cached without validation or issuer-origin binding. This allows a poisoned discovery response to replace all endpoint values with attacker-controlled values rather than endpoint URLs that share the origin of the configured server metadata URL.
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