bouncycastle: Use of a Broken or Risky Cryptographic Algorithm vulnerability in Legion of the Bouncy Castle Inc
CVE-2026-5588 is fixed in 7 products on 1 platform, first by DEBIAN-CVE-2026-5588, released April 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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 bcpkix on All (pkix modules). This vulnerability is associated with program files JcaContentVerifierProviderBuilder.Java, JcaContentVerfierProviderBuilder.Java. This issue affects BC-JAVA: from 1.67 before 1.80.2, from 1.81 before 1.81.1, from 1.82 before 1.84; BCPKIX-FIPS: from 2.0.6 before 2.0.11, from 2.1.7 before 2.1.11; BCPIX-LTS: from 2.73.7 before 2.73.11.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| bouncycastle · Debian 14 | 1.86-1 | DEBIAN-CVE-2026-5588 | Apr 15, 2026 |
| bouncycastle · amzn 2023 | 1.70-4.amzn2023.0.7 | ALAS2023-2026-1775 | Jun 8, 2026 |
| bouncycastle-javadoc · amzn 2023 | 1.70-4.amzn2023.0.7 | ALAS2023-2026-1775 | Jun 8, 2026 |
| bouncycastle-mail · amzn 2023 | 1.70-4.amzn2023.0.7 | ALAS2023-2026-1775 | Jun 8, 2026 |
| bouncycastle-pg · amzn 2023 | 1.70-4.amzn2023.0.7 | ALAS2023-2026-1775 | Jun 8, 2026 |
| bouncycastle-pkix · amzn 2023 | 1.70-4.amzn2023.0.7 | ALAS2023-2026-1775 | Jun 8, 2026 |
| bouncycastle-tls · amzn 2023 | 1.70-4.amzn2023.0.7 | ALAS2023-2026-1775 | Jun 8, 2026 |
| bouncycastle-util · amzn 2023 | 1.70-4.amzn2023.0.7 | ALAS2023-2026-1775 | Jun 8, 2026 |
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