Commvault Cloud: Server-Side Request Forgery
CVE-2026-13739 is a critical-severity server-side request forgery vulnerability in Commvault Cloud from Commvault, with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected Commvault Cloud versions: 11.46.0 through 11.46.9; 11.44.0 through 11.44.10; 11.40.0 through 11.40.62, and others listed below. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.48% chance of exploitation within 30 days, which is low compared with other CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update Commvault to 11.36.114 or 11.40.63 or 11.44.11 or 11.46.10, whichever matches your release line, or a later version.
- Read the advisory on documentation.commvault.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Commvault | Commvault Cloud | 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 | Not stated |
| Commvault | Commvault | 11.36.0 up to, but not including, 11.36.114; 11.40.0 up to, but not including, 11.40.63; 11.44.0 up to, but not including, 11.44.11; 11.46.0 up to, but not including, 11.46.10 | 11.36.114, 11.40.63, 11.44.11, 11.46.10 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 8.8 | High | CNA |
| CVSS 3.1 | 9.8 | Critical | NVD |
Official description
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.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Server-Side Request Forgery
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.
How developers prevent this class of flaw
- If there is a known list of applications, IP, hostname, and/or domains to which the product is allowed to communicate, then use allowlists to ensure that outgoing requests are restricted to these known entities. The allowlists could be in the application code or possibly enforced by firewalls or network segmentation.
- If the product is expected to be able to connect to arbitrary IP addresses or domains, consider using a denylist that includes private network addresses, internal domain names, etc. The denylist could be in the application code or possibly enforced by firewalls or network segmentation.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in Commvault Cloud
- 8.7 High severity
- 7.1 High severity
- 8.7 High severity
- 7.7 High severity
- 7.1 High severity
- 7.1 High severity
Recent Server-Side Request Forgery vulnerabilities
- 8.6 High severity
- 9.1 Critical severity
- 9.3 Critical severity
- 8.3 High severity
- 7.5 High severity
- 7.5 High severity
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