CVE-2026-26960
An attacker can exploit multiple vulnerabilities in Atlassian Bamboo, Atlassian Bitbucket, Atlassian Confluence and Atlassian Jira to execute arbitrary code, bypass security measures, manipulate or disclose data, or conduct cross-site scripting attacks.
CSIRTS triage
- What
- Multiple vulnerabilities across Atlassian products (Bamboo, Bitbucket, Confluence, Jira) enable code execution, auth bypass, XSS, and data manipulation.
- Who is affected
- Organisations running Atlassian Bamboo, Bitbucket, Confluence, or Jira are affected.
- Urgency
- High severity with multiple attack vectors and critical impact on confidentiality, integrity, and availability.
- Action
- Apply Atlassian security patches for all affected products immediately.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all EPSS-scored CVEs.
Advisory coverage (3)
- high[UPDATE] [high] Atlassian Bamboo, Bitbucket, Confluence, Jira: Multiple vulnerabilitiescert-bund · 2026-08-03
- high[NEW] [high] Oracle Siebel CRM: Multiple vulnerabilitiescert-bund · 2026-07-22
- high[UPDATE] [high] Atlassian products (Bamboo, Bitbucket, Confluence, Crucible, Fisheye, and Jira): Multiple vuln…cert-bund · 2026-07-20
External references
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[](https://www.csirts.com/cve/CVE-2026-26960)