CVE-2026-5588
: Use of a Broken or Risky Cryptographic Algorithm vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA bcpkix on all (pkix modules). PKIX draft CompositeVerifier accepts empty signature sequence as valid. This issue affects BC-JAVA: from 1.49 before 1.84.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 7.5
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/U:Amber
- EPSS probability
- 0.64%
- CWE
- CWE-327, CWE-327
- Published
- 2026-04-15
- Last modified
- 2026-09-15
Affected products
- Legion of the Bouncy Castle Inc. BC-JAVA
- Legion of the Bouncy Castle Inc. BC-JAVA
- Legion of the Bouncy Castle Inc. BCPKIX-FIPS
- Legion of the Bouncy Castle Inc. BCPKIX-FIPS
- Legion of the Bouncy Castle Inc. BCPIX-LTS
- Legion of the Bouncy Castle Inc. BC-JAVA
- Legion of the Bouncy Castle Inc. BC-JAVA
Weakness type
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