Vulnerability Description
In Bouncy Castle for Java before 1.85, OpenPGP CFB quick-check oracle active on symmetric/session-key paths. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpg-fips 1.0.13 (1.0.X series), 2.0.13 (2.0.X series) and 2.1.13 (2.1.X series).
Related Weaknesses (CWE)
References
- https://github.com/bcgit/bc-java/commit/6b94b1c146cec1f565d9a85847fae511af77503e
- https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9059640
FAQ
What is CVE-2026-59640?
CVE-2026-59640 is a documented vulnerability. In Bouncy Castle for Java before 1.85, OpenPGP CFB quick-check oracle active on symmetric/session-key paths. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Ja...
How severe is CVE-2026-59640?
CVSS scoring is not yet available for CVE-2026-59640. Check NVD for updates.
Is there a patch for CVE-2026-59640?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.