Vulnerability Description
In Bouncy Castle for Java before 1.85, CMS AuthEnvelopedData fails to enforce tag-length on decryption. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpkix-fips 1.0.12 (1.0.X series), 2.0.12 (2.0.X series) and 2.1.12 (2.1.X series).
Related Weaknesses (CWE)
References
- https://github.com/bcgit/bc-java/commit/0fefa539e6ac5c66e1daee5a13b23d1d4769cc01
- https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9012802
FAQ
What is CVE-2026-12802?
CVE-2026-12802 is a documented vulnerability. In Bouncy Castle for Java before 1.85, CMS AuthEnvelopedData fails to enforce tag-length on decryption. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FI...
How severe is CVE-2026-12802?
CVSS scoring is not yet available for CVE-2026-12802. Check NVD for updates.
Is there a patch for CVE-2026-12802?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.