CVE-2026-5588

EUVD-2026-22871
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 47.95%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
0:2.16.0-22.redhat_00057.1.el7eap ≤
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< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
0:2.3.14-11.SP11_redhat_00001.1.el7eap ≤
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< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
0:1.5.26-2.Final_redhat_00001.1.el7eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
0:2.18.8-1.redhat_00003.1.el7eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
0:2.18.8-1.redhat_00003.1.el7eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
0:2.18.8-1.redhat_00003.1.el7eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
0:2.18.8-1.redhat_00003.1.el7eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
0:2.18.8-1.redhat_00003.1.el7eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
0:2.18.8-1.redhat_00003.1.el7eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
0:5.0.31-3.SP2_redhat_00001.1.el7eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
0:1.10.0-46.Final_redhat_00044.1.el7eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
0:4.1.135-1.Final_redhat_00001.1.el7eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
0:4.1.135-1.Final_redhat_00001.1.el7eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
0:2.5.5-30.SP12_redhat_00020.1.el7eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
0:2.5.5-24.SP12_redhat_00016.1.el7eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
0:2.2.40-2.SP3_redhat_00001.1.el7eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
0:7.4.25-2.GA_redhat_00001.1.el7eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
0:1.84.0-1.redhat_00001.1.el8eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:2.40.0-6.redhat_00012.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:2.0.5-1.redhat_00001.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:2.0.3-1.redhat_00001.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:1.84.0-1.redhat_00001.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:801.6.0-1.GA_redhat_00001.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:1.0.3-1.redhat_00001.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:33.0.0-3.jre_redhat_00004.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:3.7.19-1.Final_redhat_00001.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:6.6.48-1.Final_redhat_00001.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:7.2.6-1.Final_redhat_00001.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:2.1.4-1.redhat_00001.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:3.6.2-1.Final_redhat_00001.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:16.1.0-1.Final_redhat_00001.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:4.0.6-1.redhat_00001.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:4.1.132-1.Final_redhat_00001.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:4.1.132-1.Final_redhat_00001.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:3.6.1-1.redhat_00001.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:3.1.12-1.redhat_00001.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:2.2.21-5.redhat_00003.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:8.1.6-5.GA_redhat_00007.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:1.0.1-4.Final_redhat_00002.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:2.1.4-1.Final_redhat_00001.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:8.1.1-10.GA_redhat_00017.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:2.3.0-1.Final_redhat_00001.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:2.3.0-1.Final_redhat_00001.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
0:3.0.4-5.redhat_00007.1.el9eap ≤
𝑥
< *
ADP
Red HatRed Hat OpenShift Dev Spaces 3.28
1779528224 ≤
𝑥
< *
ADP
Red HatRed Hat OpenShift Dev Spaces 3.28
1779359423 ≤
𝑥
< *
ADP
Debian logo
Debian Releases
Debian Product
Codename
bouncycastle
bookworm
vulnerable
bullseye
vulnerable
forky
vulnerable
sid
vulnerable
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
bouncycastle
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
questing
ignored
resolute
needs-triage
xenial
needs-triage
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
bouncycastle
Amazon Linux 2023
0:1.70-4.amzn2023.0.7
fixed
bouncycastle-javadoc
Amazon Linux 2023
0:1.70-4.amzn2023.0.7
fixed
bouncycastle-mail
Amazon Linux 2023
0:1.70-4.amzn2023.0.7
fixed
bouncycastle-pg
Amazon Linux 2023
0:1.70-4.amzn2023.0.7
fixed
bouncycastle-pkix
Amazon Linux 2023
0:1.70-4.amzn2023.0.7
fixed
bouncycastle-tls
Amazon Linux 2023
0:1.70-4.amzn2023.0.7
fixed
bouncycastle-util
Amazon Linux 2023
0:1.70-4.amzn2023.0.7
fixed
Common Weakness Enumeration
References
https://github.com/bcgit/bc-java/commit/656bae0dbd9b1521f840521ff786e78749fe3057
https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%905588
https://access.redhat.com/errata/RHSA-2026:11720
https://access.redhat.com/errata/RHSA-2026:11721
https://access.redhat.com/errata/RHSA-2026:13631
https://access.redhat.com/errata/RHSA-2026:14272
https://access.redhat.com/errata/RHSA-2026:14276
https://access.redhat.com/errata/RHSA-2026:17668
https://access.redhat.com/errata/RHSA-2026:18054
https://access.redhat.com/errata/RHSA-2026:18055
https://access.redhat.com/errata/RHSA-2026:18059
https://access.redhat.com/errata/RHSA-2026:21772
https://access.redhat.com/errata/RHSA-2026:53644
https://access.redhat.com/errata/RHSA-2026:53806
https://access.redhat.com/security/cve/CVE-2026-5588
https://bugzilla.redhat.com/show_bug.cgi?id=2458634
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5588.json