CVE-2026-58061

Weakness

In Bouncy Castle for Java before 1.85, CCM-family modes write plaintext to caller buffer before tag check. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 1.0.2.7 (1.0.X series), 2.0.2 (2.0.X series) and 2.1.3 (2.1.X series).

Affected products

• bouncycastle bc-java
• bouncycastle bouncy_castle_for_java_lts
• bouncycastle fips_java_api

References

• https://github.com/bcgit/bc-java/commit/08d675106bb663ddcc6ec0a4af6f6f62f512697b
• https://github.com/bcgit/bc-java/commit/cd4a5ab3ad619ff03c7767c1b8b19d5dea2970af
• https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9058061