PatchTheCVECVE-2026-13739: A legacy endpoint in Command Center contained an unauthenticated server-side request forgery (SSRF) vulnerabil
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CRITICAL 9.8REMOTEUPGRADE
CVE-2026-13739 is a critical-severity flaw (CVSS 9.8) affecting commvault. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A legacy endpoint in Command Center contained an unauthenticated server-side request forgery (SSRF) vulnerability related to the handling of arbitrary target URLs. Software customers upgrade to resolved maintenance release. Update Command Center.
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.4% (top 68%) |
| CISA exploited list | No |
| Weakness | CWE-918 |
| Published | 2026-08-11 |
| Last modified | 2026-10-23 |
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
commvault commvault UPGRADE
Affected: >= 11.36.0 and < 11.36.114 · >= 11.40.0 and < 11.40.63 · >= 11.44.0 and < 11.44.11 · >= 11.46.0 and < 11.46.10
Fixed in: 11.36.114, 11.40.63, 11.44.11, 11.46.10
Safe to downgrade to: a release before 11.36.0
1. Check installed version
apt-cache policy commvault || rpm -q commvault || commvault --version
2. UPGRADE to 11.36.114 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade commvault
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade commvault
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 11.36.0 (Debian / Ubuntu)
apt-cache madison commvault
sudo apt install commvault=<VERSION_BEFORE_11.36.0>
sudo apt-mark hold commvault
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list commvault
sudo dnf downgrade commvault-<VERSION_BEFORE_11.36.0>
sudo dnf versionlock add commvault
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
Exact fixes by distribution
Fedora 46 · diffoscope · FIXED · 335-1.fc46 · FEDORA-2026-e4c4cc0856 · source
sudo dnf upgrade --advisory=FEDORA-2026-e4c4cc0856
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Related CVEs
- CVE-2026-13738 CRITICAL 9.8 UPGRADE CommServe contained an authorization bypass vulnerability affecting a limited set of command execution operati
- CVE-2026-13737 CRITICAL 9.8 UPGRADE CommServe contained an allowlist bypass vulnerability affecting command execution authorization