High 2 vendors · 2 advisories

CVE-2026-71889: Cryptographic Failure org.bouncycastle:bcpkix-jdk18on, org.bouncycastle:bcprov-jdk18on Dependency in Bamboo Data Center

CVE-2026-71889 key facts

CISA KEV: Not listed (catalogue checked Nov 10, 2026)
Highest advisory rating: High
CVSS base score: 7.5 (Atlassian), 7.5 (Red Hat)
Weakness: CWE-295
Fixed releases: Atlassian: Bamboo Data Center and Server: 12.1.12 (LTS) recommended Data Center Only, Bamboo Data Center and Server: 10.2.24 (LTS) Data Center Only, Fisheye/Crucible: 4.9.15 recommended
Red Hat: ocp-tools-4/jenkins-rhel8:1792044386, ocp-tools-4/jenkins-rhel9:1792040096, org.bouncycastle/bcpkix-jdk18on:1.86.0.redhat-00001, ocp-tools-4/jenkins-rhel9:1792040287, ocp-tools-4/jenkins-rhel9:1792040131, ocp-tools-4/jenkins-rhel8:1792044327 and 7 more in the advisory
Vendor advisories: 2 from Atlassian, Red Hat
Listed by VulniPulse: Oct 15, 2026
Record changed: Nov 10, 2026

Ratings, versions and fixes are quoted from the vendor advisories that cover only CVE-2026-71889; each belongs to its advisory, not to every product listed. How records are collected and checked.

How do I fix CVE-2026-71889?

Upgrade to a fixed release named by the vendor:

Atlassian: Bamboo Data Center and Server: 12.1.12 (LTS) recommended Data Center Only, Bamboo Data Center and Server: 10.2.24 (LTS) Data Center Only, Fisheye/Crucible: 4.9.15 recommended
Red Hat: ocp-tools-4/jenkins-rhel8:1792044386, ocp-tools-4/jenkins-rhel9:1792040096, org.bouncycastle/bcpkix-jdk18on:1.86.0.redhat-00001, ocp-tools-4/jenkins-rhel9:1792040287, ocp-tools-4/jenkins-rhel9:1792040131, ocp-tools-4/jenkins-rhel8:1792044327

Upgrade to a fixed version listed by Atlassian: Bamboo Data Center and Server: 12.1.12 (LTS) recommended Data Center Only; Bamboo Data Center and Server: 10.2.24 (LTS) Data Center Only; Fisheye/Crucible: 4.9.15 recommended. (Atlassian)
Do not use PKIXCertPathReviewer for trust or path validation decisions. Instead, validate certificate paths using the standard Java Cryptography Architecture via CertPathValidator.getInstance("PKIX", "BC"). (Red Hat)

Vendor advisories for CVE-2026-71889

Atlassian

1 advisory

Advisory severityHigh7.5
High [CVE-2026-71889] Cryptographic Failure org.bouncycastle:bcpkix-jdk18on, org.bouncycastle:bcprov-jdk18on Dependency in Bamboo Data Center
CVE-2026-71889Source published Oct 20, 2026
Cryptographic Failure org.bouncycastle:bcpkix-jdk18on, org.bouncycastle:bcprov-jdk18on Dependency in Bamboo Data Center. Affected: Bamboo Data Center and Server, Fisheye/Crucible. Listed in Atlassian's Security Bulletin of October 20 2026.
Affected products in this advisory
Bamboo Data Center and Server
Fisheye/Crucible
Source-reported affected versions
Bamboo Data Center and Server: 12.1.0 to 12.1.11 (LTS)
Bamboo Data Center and Server: 12.0.0 to 12.0.2
Bamboo Data Center and Server: 11.0.0 to 11.0.8
Bamboo Data Center and Server: 10.2.0 to 10.2.23 (LTS)
3 more entries in the full advisory.
Source-reported fixed versions
Bamboo Data Center and Server: 12.1.12 (LTS) recommended Data Center Only
Bamboo Data Center and Server: 10.2.24 (LTS) Data Center Only
Fisheye/Crucible: 4.9.15 recommended
Mitigation guidance
Upgrade to a fixed version listed by Atlassian: Bamboo Data Center and Server: 12.1.12 (LTS) recommended Data Center Only; Bamboo Data Center and Server: 10.2.24 (LTS) Data Center Only; Fisheye/Crucible: 4.9.15 recommended.
Full advisory and evidence Open source bulletin

Red Hat

1 advisory

Advisory severityHigh7.5
High [CVE-2026-71889] Certificate validation bypass via missing name constraint checks
CVE-2026-71889Source published Oct 3, 2026Source updated Oct 3, 2026
Certificate validation bypass via missing name constraint checks. Red Hat rates this important (CVSS 7.5). Weakness: CWE-295. Red Hat lists fixing advisory RHSA-2026:88152 with package ocp-tools-4/jenkins-rhel8:1792044386, ocp-tools-4/jenkins-rhel9:1792040096, org.bouncycastle/bcpkix-jdk18on:1.86.0.redhat-00001, ocp-tools-4/jenkins-rhel9:1792040287. Affected products named by the advisory: Red Hat build of Quarkus 3.27.6.redhat; Red Hat build of Quarkus 3.33.4.redhat; OpenShift Developer Tools and Services; Red Hat build of Apache Camel 4 for Quarkus 3; and 13 more.
Related products — impact not confirmed
Red Hat build of Quarkus 3.27.6.redhat
Red Hat build of Quarkus 3.33.4.redhat
OpenShift Developer Tools and Services
Red Hat build of Apache Camel 4 for Quarkus 3
13 more entries in the full advisory.
Source-reported affected versions
< 1.86
< 2.73.13
< 1.0.13
< 1.0.X
4 more entries in the full advisory.
Source-reported fixed versions
ocp-tools-4/jenkins-rhel8:1792044386
ocp-tools-4/jenkins-rhel9:1792040096
org.bouncycastle/bcpkix-jdk18on:1.86.0.redhat-00001
ocp-tools-4/jenkins-rhel9:1792040287
9 more entries in the full advisory.
Mitigation guidance
Do not use PKIXCertPathReviewer for trust or path validation decisions. Instead, validate certificate paths using the standard Java Cryptography Architecture via CertPathValidator.getInstance("PKIX", "BC").
Full advisory and evidence Open source bulletin

References

CVE-2026-71889 recordCVE.org
CVE-2026-71889 detailNVD

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