High 2 vendors · 2 advisories

CVE-2026-71888: Cryptographic Failure org.bouncycastle:bcpkix-jdk18on, org.bouncycastle:bcutil-jdk18on Dependency in Bamboo Data Center

CVE-2026-71888 key facts

CISA KEV: Not listed (catalogue checked Nov 10, 2026)
Highest advisory rating: High
CVSS base score: 8.7 (Atlassian), 7.5 (Red Hat)
Weakness: CWE-349
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, ocp-tools-4/jenkins-rhel9:1792040287, ocp-tools-4/jenkins-rhel9:1792040131, ocp-tools-4/jenkins-rhel8:1792044327, ocp-tools-4/jenkins-rhel8:1792044326 and 6 more in the advisory
Vendor advisories: 2 from Atlassian, Red Hat
Listed by VulniPulse: Oct 14, 2026
Record changed: Nov 10, 2026

Ratings, versions and fixes are quoted from the vendor advisories that cover only CVE-2026-71888; each belongs to its advisory, not to every product listed. How records are collected and checked.

How do I fix CVE-2026-71888?

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, ocp-tools-4/jenkins-rhel9:1792040287, ocp-tools-4/jenkins-rhel9:1792040131, ocp-tools-4/jenkins-rhel8:1792044327, ocp-tools-4/jenkins-rhel8:1792044326

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)
Avoid using CMSAuthenticatedDataParser to stream untrusted CMS AuthenticatedData structures, or validate that messages containing authenticated attributes explicitly define a digestAlgorithm before trusting attribute values. Alternatively, process messages using non-streaming CMS parsers. (Red Hat)

Vendor advisories for CVE-2026-71888

Atlassian

1 advisory

Advisory severityHigh8.7
High [CVE-2026-71888] Cryptographic Failure org.bouncycastle:bcpkix-jdk18on, org.bouncycastle:bcutil-jdk18on Dependency in Bamboo Data Center
CVE-2026-71888Source published Oct 20, 2026
Cryptographic Failure org.bouncycastle:bcpkix-jdk18on, org.bouncycastle:bcutil-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-2026-71888] Security bypass via unvalidated attributes in CMS AuthenticatedData parser
CVE-2026-71888Source published Oct 3, 2026Source updated Oct 3, 2026
Security bypass via unvalidated attributes in CMS AuthenticatedData parser. Red Hat rates this important (CVSS 7.5). Weakness: CWE-349. Red Hat lists fixing advisory RHSA-2026:88156 with package ocp-tools-4/jenkins-rhel8:1792044386, ocp-tools-4/jenkins-rhel9:1792040096, ocp-tools-4/jenkins-rhel9:1792040287, ocp-tools-4/jenkins-rhel9:1792040131. Affected products named by the advisory: OpenShift Developer Tools and Services; Red Hat Ansible Automation Platform 2; Red Hat OpenShift AI (RHOAI); Red Hat OpenShift Dev Spaces; and 1 more.
Related products — impact not confirmed
OpenShift Developer Tools and Services
Red Hat Ansible Automation Platform 2
Red Hat OpenShift AI (RHOAI)
Red Hat OpenShift Dev Spaces
1 more entries in the full advisory.
Source-reported affected versions
< 1.86
< 2.73.13
< 1.0.13
< 1.0.X
6 more entries in the full advisory.
Source-reported fixed versions
ocp-tools-4/jenkins-rhel8:1792044386
ocp-tools-4/jenkins-rhel9:1792040096
ocp-tools-4/jenkins-rhel9:1792040287
ocp-tools-4/jenkins-rhel9:1792040131
8 more entries in the full advisory.
Mitigation guidance
Avoid using CMSAuthenticatedDataParser to stream untrusted CMS AuthenticatedData structures, or validate that messages containing authenticated attributes explicitly define a digestAlgorithm before trusting attribute values. Alternatively, process messages using non-streaming CMS parsers.
Full advisory and evidence Open source bulletin

References

CVE-2026-71888 recordCVE.org
CVE-2026-71888 detailNVD

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