SB2026081133 - Multiple vulnerabilities in Commvault
Published: August 11, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2026-13739)
CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)
CVSSv4: 8.8 [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]
The vulnerability allows a remote attacker to perform server-side request forgery.
The vulnerability exists due to improper input validation in a legacy endpoint in Command Center when handling arbitrary target URLs. A remote attacker can send a specially crafted request to perform server-side request forgery.
2) Improper access control (CVE-ID: CVE-2026-13737)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to improper access control in command execution authorization in CommServe when handling command execution requests. A remote attacker can bypass the allowlist to execute arbitrary code.
3) Improper access control (CVE-ID: CVE-2026-13738)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to execute command execution operations without authorization.
The vulnerability exists due to improper access control in CommServe when handling command execution operations. A remote attacker can invoke a limited set of command execution operations to execute command execution operations without authorization.
Remediation
Install update from vendor's website.