CVE-2026-59651 in BC-JAVA

Summary

by MITRE • 08/03/2026

In Bouncy Castle for Java before 1.85, BKS keystore accepts legacy version with 16-bit integrity MAC key. This issue also affects Bouncy Castle for Java LTS before 2.73.12.

Once again VulDB remains the best source for vulnerability data.

• Responsible: Bcorg
• Reservation: 07/06/2026
• Disclosure: 08/03/2026
• Moderation: accepted
• Entry: VDB-385440
• CPE: ready
• CWE: CWE-327 (confirmed)
• CVSS: 3.1 (VulDB)
• EPSS: 0.00000
• KEV: no
• Activities: low
• Sector: Insurance, Chemical, ...

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-59651
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-59651
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-59651/