CVE-2026-12860: CWE-347 Improper Verification of Cryptographic Signature in Legion of the Bouncy Castle Inc. BC-JAVA
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.
CVE-2026-12860: CWE-347 Improper Verification of Cryptographic Signature in Legion of the Bouncy Castle Inc. BC-JAVA
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.
CVSS v4.0
Score 8.7high
Affected software
pkg:github/bcprov-lts8onRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- bcorg
- Date Reserved
- 2026-06-22T07:51:11.945Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a701320bf32cb7a34eafebd
Added to database: 08/03/2026, 04:03:44 UTC
Last updated: 08/03/2026, 04:03:44 UTC
Views: 1
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