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CVE-2026-13739 – Unauthenticated Server-Side Request Forgery (SSRF) – Commvault Command Center 11.36

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Summary

CVE-2026-13739 is an unauthenticated server-side request forgery (SSRF) vulnerability in Commvault Command Center. A legacy Command Center endpoint improperly handled arbitrary target URLs, allowing a remote attacker to make requests on behalf of the affected server without authentication. It carries a High severity rating (CVSS 8.8).

Technical details

  • Root cause: A legacy Command Center endpoint improperly handled arbitrary target URLs (CWE-918, SSRF).
  • Trigger conditions: No authentication and no user interaction are required to exploit the flaw.
  • Attack vector: Network — the affected endpoint is reachable remotely over the network.
  • Impact: An attacker can coerce the server into issuing unauthorized requests on its behalf, resulting in high confidentiality impact with limited integrity and availability impact.

Affected software

Commvault (Command Center) on Windows and Linux:

  • 11.46.0 through 11.46.9
  • 11.44.0 through 11.44.10
  • 11.40.0 through 11.40.62
  • 11.36.0 through 11.36.113

Severity

CVSS v4.0 base score: 8.8 (High)
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N

Mitigation and recommended actions

  • Immediate: Upgrade Command Center to a fixed maintenance release:
    • 11.46.10 or later
    • 11.44.11 or later
    • 11.40.63 or later
    • 11.36.114 or later
  • After upgrading, verify remediation via Command Center’s server management interface, confirming all Web Server role instances run the patched version or higher.
  • If no patch can be applied immediately: Restrict network access to the Command Center interface to trusted management networks only.

References

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