CVE-2026-5588
Description
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.
How to fix
- org.bouncycastle:bcpkix-jdk18on1.84 or later
- org.bouncycastle:bcpkix-jdk15to181.84 or later
- org.bouncycastle:bcpkix-jdk15on1.84 or later
- org.bouncycastle:bcpkix-jdk141.84 or later
- org.bouncycastle:bcpkix-debug-jdk18on1.84 or later
- org.bouncycastle:bcpkix-debug-jdk15to181.84 or later
- org.bouncycastle:bcpkix-debug-jdk141.84 or later
- github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%905588
- access.redhat.com/errata/RHSA-2026:53644
- access.redhat.com/errata/RHSA-2026:53645
- access.redhat.com/errata/RHSA-2026:18054
- access.redhat.com/errata/RHSA-2026:53646
- access.redhat.com/errata/RHSA-2026:18055
- access.redhat.com/errata/RHSA-2026:60247
- access.redhat.com/errata/RHSA-2026:60249
- access.redhat.com/errata/RHSA-2026:60248
- access.redhat.com/errata/RHSA-2026:60239
- access.redhat.com/errata/RHSA-2026:60251
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| org.bouncycastle:bcpkix-jdk18onMaven | 1.49 ≤ v < 1.84 | 1.84 |
| org.bouncycastle:bcpkix-jdk15to18Maven | 1.49 ≤ v < 1.84 | 1.84 |
| org.bouncycastle:bcpkix-jdk15onMaven | 1.49 ≤ v < 1.84 | 1.84 |
| org.bouncycastle:bcpkix-jdk14Maven | 1.49 ≤ v < 1.84 | 1.84 |
| org.bouncycastle:bcpkix-debug-jdk18onMaven | 1.49 ≤ v < 1.84 | 1.84 |
| org.bouncycastle:bcpkix-debug-jdk15to18Maven | 1.49 ≤ v < 1.84 | 1.84 |
| org.bouncycastle:bcpkix-debug-jdk14Maven | 1.49 ≤ v < 1.84 | 1.84 |
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