CVE-2026-12860

Description

In Bouncy Castle for Java before 1.85, RSA PKCS#1 verification skips last two hash bytes in NULL-omitted path. This issue also affects Bouncy Castle for Java LTS before 2.73.12.

References

• https://github.com/bcgit/bc-java/commit/ea5970ea9b2fb91d763b904692fd21089ca3e396
• https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9012860