HIGH 8.7 NVD
CVE-2026-12803
In Bouncy Castle for Java before 1.85, KCCMBlockCipher MAC does not bind nonce when AAD is absent (cross-nonce AEAD forgery). This issue also affects Bouncy Cas
In Bouncy Castle for Java before 1.85, KCCMBlockCipher MAC does not bind nonce when AAD is absent (cross-nonce AEAD forgery). This issue also affects Bouncy Castle for Java LTS before 2.73.12.
References
- https://github.com/bcgit/bc-java/commit/697794413ebf7bc5e3fce609a707826ba52981af
- https://github.com/bcgit/bc-java/commit/7d79aa76e984da85f2a541cae8ba2ae56e1713bc
- https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9012803
This high severity vulnerability with a CVSS score of 8.7 was published on 2026-08-03 via NVD.
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