Bug 2458634 (CVE-2026-5588) - CVE-2026-5588 bouncycastle: BC-JAVA: PKIX draft CompositeVerifier accepts empty signature sequence as valid
Summary: CVE-2026-5588 bouncycastle: BC-JAVA: PKIX draft CompositeVerifier accepts emp...
Keywords:
Status: NEW
Alias: CVE-2026-5588
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2463529 2463531 2463532 2463527 2463528 2463530 2463533 2463534
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-15 10:01 UTC by OSIDB Bzimport
Modified: 2026-09-17 17:48 UTC (History)
104 users (show)

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

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:13631 0 None None None 2026-05-05 07:57:09 UTC
Red Hat Product Errata RHSA-2026:14272 0 None None None 2026-05-06 17:59:18 UTC
Red Hat Product Errata RHSA-2026:14276 0 None None None 2026-05-06 17:59:49 UTC
Red Hat Product Errata RHSA-2026:17668 0 None None None 2026-05-14 16:55:51 UTC
Red Hat Product Errata RHSA-2026:18054 0 None None None 2026-05-18 12:22:21 UTC
Red Hat Product Errata RHSA-2026:18055 0 None None None 2026-05-18 12:19:22 UTC
Red Hat Product Errata RHSA-2026:18059 0 None None None 2026-05-18 12:12:53 UTC
Red Hat Product Errata RHSA-2026:53644 0 None None None 2026-08-11 16:36:32 UTC
Red Hat Product Errata RHSA-2026:53645 0 None None None 2026-09-17 17:48:06 UTC
Red Hat Product Errata RHSA-2026:53646 0 None None None 2026-09-17 17:46:30 UTC
Red Hat Product Errata RHSA-2026:53806 0 None None None 2026-08-11 17:41:26 UTC
Red Hat Product Errata RHSA-2026:66488 0 None None None 2026-09-10 16:34:24 UTC

Description OSIDB Bzimport 2026-04-15 10:01:24 UTC 
: 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.
Comment 2 errata-xmlrpc 2026-05-05 07:57:03 UTC 
This issue has been addressed in the following products:

  Red Hat Build of Apache Camel 4.14 for Quarkus 3.27

Via RHSA-2026:13631 https://access.redhat.com/errata/RHSA-2026:13631
Comment 3 errata-xmlrpc 2026-05-06 17:59:12 UTC 
This issue has been addressed in the following products:

  Red Hat AMQ Broker 7.13.5

Via RHSA-2026:14272 https://access.redhat.com/errata/RHSA-2026:14272
Comment 4 errata-xmlrpc 2026-05-06 17:59:44 UTC 
This issue has been addressed in the following products:

  Red Hat AMQ Broker 7.12.7

Via RHSA-2026:14276 https://access.redhat.com/errata/RHSA-2026:14276
Comment 5 errata-xmlrpc 2026-05-14 16:55:46 UTC 
This issue has been addressed in the following products:

  Red Hat build of Apache Camel 4.18.1 for Spring Boot 3.5.14

Via RHSA-2026:17668 https://access.redhat.com/errata/RHSA-2026:17668
Comment 6 errata-xmlrpc 2026-05-18 12:12:47 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Enterprise Application Platform 8.1

Via RHSA-2026:18059 https://access.redhat.com/errata/RHSA-2026:18059
Comment 7 errata-xmlrpc 2026-05-18 12:19:16 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9

Via RHSA-2026:18055 https://access.redhat.com/errata/RHSA-2026:18055
Comment 8 errata-xmlrpc 2026-05-18 12:22:15 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8

Via RHSA-2026:18054 https://access.redhat.com/errata/RHSA-2026:18054
Comment 11 errata-xmlrpc 2026-08-11 16:36:26 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7

Via RHSA-2026:53644 https://access.redhat.com/errata/RHSA-2026:53644
Comment 12 errata-xmlrpc 2026-08-11 17:41:22 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Enterprise Application Platform 7.4.25

Via RHSA-2026:53806 https://access.redhat.com/errata/RHSA-2026:53806
Comment 14 errata-xmlrpc 2026-09-10 16:34:18 UTC 
This issue has been addressed in the following products:

  Red Hat AMQ Broker 7.14.1

Via RHSA-2026:66488 https://access.redhat.com/errata/RHSA-2026:66488
Comment 15 Jon Orris 2026-09-17 17:46:24 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9

Via RHSA-2026:53646 https://access.redhat.com/errata/RHSA-2026:53646
Comment 16 Jon Orris 2026-09-17 17:48:01 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8

Via RHSA-2026:53645 https://access.redhat.com/errata/RHSA-2026:53645
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