CVE-2026-13738 Improper Authorization Validation

What is CVE-2026-13738?

CVE-2026-13738 is a critical missing authorization vulnerability in Commvault Cloud, published on 11 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

CommServe contained an authorization bypass vulnerability affecting a limited set of command execution operations. Software customers upgrade to resolved maintenance release. Update all Commvault installations, including Commserve, Webserver, Command Center, Media Agents, Clients and HyperScale X.

Weakness: CWE-863

Which versions are affected by CVE-2026-13738?

It affects 1 product.

Products include Commvault Commvault.

How do I fix CVE-2026-13738?

No fix has been published for CVE-2026-13738 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-13738 being exploited?

There is no known exploitation of CVE-2026-13738 in the wild and no public exploit code.

Other vulnerabilities in Commvault Cloud

• CVE-2025-34028 Commvault Command Center Path Traversal Exploited Critical 9.3
• CVE-2025-3928 Commvault Web Server Unspecified Exploited High 8.7
• CVE-2017-18044 Command injection in n/a Critical 9.8
• CVE-2026-77089 Command Center API Authentication Bypass Critical 9.3
• CVE-2026-13737 Command Restriction Bypass Critical 9.2

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-98g5-m37p-p3v2.