Bug 2510256 (CVE-2026-12860) - CVE-2026-12860 org.bouncycastle/bc-java: org.bouncycastle/bc-lts-java: Bouncy Castle for Java: Cryptographic signature bypass in RSA PKCS#1 verification
Summary: CVE-2026-12860 org.bouncycastle/bc-java: org.bouncycastle/bc-lts-java: Bouncy...
Keywords:
Status: NEW
Alias: CVE-2026-12860
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2533199 2533200
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-03 04:01 UTC by OSIDB Bzimport
Modified: 2026-09-24 19:57 UTC (History)
114 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:70257 0 None None None 2026-09-22 14:01:50 UTC
Red Hat Product Errata RHSA-2026:71675 0 None None None 2026-09-24 19:57:08 UTC

Description OSIDB Bzimport 2026-08-03 04:01:25 UTC 
In Bouncy Castle for Java before 1.85, RSA PKCS#1 verification skips last two hash bytes in NULL-omitted path. This issue also affects Bouncy Castle for Java LTS before 2.73.12.
Comment 2 Jon Orris 2026-09-22 14:01:43 UTC 
This issue has been addressed in the following products:

  Red Hat Build of Apache Camel 3.33 for Quarkus 3.33.3.SP2

Via RHSA-2026:70257 https://access.redhat.com/errata/RHSA-2026:70257
Comment 3 Jon Orris 2026-09-24 19:57:03 UTC 
This issue has been addressed in the following products:

  Red Hat build of Apache Camel 4.18.4 for Spring Boot 3.5.16

Via RHSA-2026:71675 https://access.redhat.com/errata/RHSA-2026:71675
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