Bug 2548200 (CVE-2026-88648) - CVE-2026-88648 gnutls: gnutls: Cross-domain certificate restriction bypass via incomplete X.509 validation
Summary: CVE-2026-88648 gnutls: gnutls: Cross-domain certificate restriction bypass vi...
Keywords:
Status: NEW
Alias: CVE-2026-88648
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
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Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-08 19:11 UTC by OSIDB Bzimport
Modified: 2026-10-12 04:33 UTC (History)
17 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-10-08 19:11:26 UTC 
Incomplete X.509 implementation in GnuTLS v3.8.13 allows attackers controlling a subordinate Certificate Authority to bypass cross-domain PKI restrictions and issue unauthorized certificates.
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