GHSA-wg6q-6289-32hp

    Dashboard / Vulnerabilities / GHSA-wg6q-6289-32hp

    GHSA-wg6q-6289-32hp

    Published: 15 Apr 2026Last Modified: 10 Sept 2026
    Aliases:
    CVE-2026-5588

    Summary: Bouncy Castle Crypto Package For Java: Use of a Broken or Risky Cryptographic Algorithm vulnerability in bcpkix modules

    Details: : 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.

    References: https://nvd.nist.gov/vuln/detail/CVE-2026-5588, https://github.com/bcgit/bc-java/commit/656bae0dbd9b1521f840521ff786e78749fe3057, https://github.com/bcgit/bc-java, https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%905588

    Affected packages

    Package

    Name: org.bouncycastle:bcpkix-jdk18on

    Purl: pkg:maven/org.bouncycastle/bcpkix-jdk18on

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 1.49
    Fixed -1.84

    Affected versions

    1.71
    1.71.1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High