A AegiFlow
HIGHCVSS 8.7

CVE-2026-12803

CVE-2026-12803 updated by NVD

Modified
2026-09-04
Sources
nvd

Summary

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

Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.

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