CVE-2026-71885

Published 3 October 2026 · tracked since 3 October 2026

Description

In Bouncy Castle for Java before 1.86, the Messaging Layer Security (MLS, RFC 9420) implementation did not bind an X.509 credential to a LeafNode's signature_key. LeafNode.verify() checked a leaf's signature against the signature_key carried in the leaf itself, while the credential's X.509 certifica

References

• NVD — National Vulnerability Database
• CVE.org record (MITRE)
• CISA Known Exploited Vulnerabilities catalog

Latest tracked vulnerabilities

• CVE-2026-105118 MEDIUM 4.7
• CVE-2026-97873
• CVE-2026-71889
• CVE-2026-71891
• CVE-2026-71886
• CVE-2026-92767 MEDIUM 6.4
• CVE-2026-92084 CRITICAL 9.1
• CVE-2026-94505 HIGH 8.1
• CVE-2026-96267 HIGH 7.5
• CVE-2026-97343 MEDIUM 4.3

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