CVE-2026-8763: Atlassian BASM (Broken Authentication & Session Management) Bouncy Castle Dependency in Confluence Data Center
This Atlassian advisory covers CVE-2026-8763 in Confluence Data Center and Server, Fisheye/Crucible and Jira Data Center and Server.
Key facts
- Vendor rating
- Critical, CVSS 9.3
- CISA KEV
- Not listed (catalogue checked )
- Affected
- Confluence Data Center and Server: 10.2.0 to 10.2.15 (LTS); Confluence Data Center and Server: 10.1.0 to 10.1.2; Confluence Data Center and Server: 10.0.2 to 10.0.3 and 13 more below
- Fixed in
- Confluence Data Center and Server: 10.2.17 to 10.2.18 (LTS) recommended Data Center Only, Confluence Data Center and Server: 9.2.24 to 9.2.25 (LTS) Data Center Only, Fisheye/Crucible: 4.9.14 recommended and 4 more below
- Source published
- Listed by VulniPulse
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Affected products & platforms
Description
BASM (Broken Authentication & Session Management) Bouncy Castle Dependency in Confluence Data Center. Affected: Confluence Data Center and Server, Fisheye/Crucible, Jira Data Center and Server, Jira Service Management Data Center and Server.
Listed in Atlassian's Security Bulletin of September 15 2026.
Text from the source record.
- Confluence Data Center and Server: 10.2.0 to 10.2.15 (LTS)
- Confluence Data Center and Server: 10.1.0 to 10.1.2
- Confluence Data Center and Server: 10.0.2 to 10.0.3
- Confluence Data Center and Server: 9.5.1 to 9.5.4
- Confluence Data Center and Server: 9.4.0 to 9.4.1
- Confluence Data Center and Server: 9.3.1 to 9.3.2
- Confluence Data Center and Server: 9.2.0 to 9.2.23 (LTS)
- Confluence Data Center and Server: 9.1.0 to 9.1.1
- Confluence Data Center and Server: 8.9.7 to 8.9.8
- Confluence Data Center and Server: 8.5.16 to 8.5.31 (LTS)
- Confluence Data Center and Server: 7.19.28 to 7.19.30 (LTS)
- Fisheye/Crucible: 4.9.0 to 4.9.13
- Jira Data Center and Server: 11.3.0 to 11.3.10 (LTS)
- Jira Data Center and Server: 11.2.0 to 11.2.1
- Jira Data Center and Server: 11.1.0 to 11.1.1
- Jira Data Center and Server: 11.0.0 to 11.0.1
Official advisory · high-confidence parse· fetched ·verify at source
How to fix CVE-2026-8763
Upgrade to a fixed release named by Atlassian:
- Confluence Data Center and Server: 10.2.17 to 10.2.18 (LTS) recommended Data Center Only
- Confluence Data Center and Server: 9.2.24 to 9.2.25 (LTS) Data Center Only
- Fisheye/Crucible: 4.9.14 recommended
- Jira Data Center and Server: 11.3.11 (LTS) recommended Data Center Only
- Jira Data Center and Server: 10.3.25 (LTS) Data Center Only
- Jira Service Management Data Center and Server: 11.3.11 (LTS) recommended Data Center Only
- Jira Service Management Data Center and Server: 10.3.25 (LTS) Data Center Only
Vendor guidance
- Upgrade to a fixed version listed by Atlassian: Confluence Data Center and Server: 10.2.17 to 10.2.18 (LTS) recommended Data Center Only; Confluence Data Center and Server: 9.2.24 to 9.2.25 (LTS) Data Center Only; Fisheye/Crucible: 4.9.14 recommended; Jira Data Center and Server: 11.3.11 (LTS) recommended Data Center Only.
Support dates for the fixed release lines
- Atlassian Confluence 10.2: support ends
- Atlassian Confluence 9.2: support ends
CVE-2026-8763 in other vendors' advisories
- Red Hat: CVE-2026-8763, high severity
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