CVE-2026-5588: falha de média gravidade em Legion of the Bouncy Castle Inc. BC-JAVA
PKIX draft CompositeVerifier accepts empty signature sequence as valid.
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Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
13Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 6.3epss 0.8%
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.
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
Produtos afetados
Legion of the Bouncy Castle Inc. · BC-JAVALegion of the Bouncy Castle Inc. · BCPIX-LTSLegion of the Bouncy Castle Inc. · BCPKIX-FIPSCVEs relacionadas — Legion of the Bouncy Castle Inc. BC-JAVA
No mesmo produto, das mais perigosas para as menos.
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Referências
https://access.redhat.com/errata/RHSA-2026:11720https://access.redhat.com/errata/RHSA-2026:11721https://access.redhat.com/errata/RHSA-2026:13631https://access.redhat.com/errata/RHSA-2026:14272https://access.redhat.com/errata/RHSA-2026:14276https://access.redhat.com/errata/RHSA-2026:17668https://access.redhat.com/errata/RHSA-2026:18054https://access.redhat.com/errata/RHSA-2026:18055https://access.redhat.com/errata/RHSA-2026:18059https://access.redhat.com/errata/RHSA-2026:21772https://access.redhat.com/errata/RHSA-2026:53644https://access.redhat.com/errata/RHSA-2026:53645