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Medium ALAS2023-2026-1775 1 CVE

Moderate: bouncycastle security update (Amazon Linux 2023)

Published Jun 8, 2026 · Updated Jun 8, 2026

Ecosystem: Amazon Linux

Summary

Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: 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.

Fixed packages 7

ReleasePackageFixed in
Amazon Linux · 2023 bouncycastle 0:1.70-4.amzn2023.0.7
Amazon Linux · 2023 bouncycastle-javadoc 0:1.70-4.amzn2023.0.7
Amazon Linux · 2023 bouncycastle-mail 0:1.70-4.amzn2023.0.7
Amazon Linux · 2023 bouncycastle-pg 0:1.70-4.amzn2023.0.7
Amazon Linux · 2023 bouncycastle-pkix 0:1.70-4.amzn2023.0.7
Amazon Linux · 2023 bouncycastle-tls 0:1.70-4.amzn2023.0.7
Amazon Linux · 2023 bouncycastle-util 0:1.70-4.amzn2023.0.7

Vulnerabilities 1

  • Medium 6.3
    CVE-2026-5588

    PKIX draft CompositeVerifier accepts empty signature sequence as valid.

    Use of a Broken or Risky Cryptographic Algorithm vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA bcpkix on all (pkix modules), Legion of the Bouncy Castle Inc. BCPKIX-FIPS bcpkix on All (pkix modules), Legion of the Bouncy Castle Inc. BCPIX-LTS bcpk…

    Legion of the Bouncy Castle BC-JAVA BCPKIX-FIPS BCPIX-LTS Debian Ubuntu Wolfi Maven

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-5588.html