Is CVE-2026-77091 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-77091 being exploited in the wild.

How severe is CVE-2026-77091?

High severity, with a CVSS score of 7.8, published 8 September 2026.

Which products and versions are affected?

Commvault DataCube 11.36.0 through 11.46.19 (specific ranges: 11.36.0-11.36.122, 11.40.0-11.40.71, 11.44.0-11.44.19, 11.46.0-11.46.19).

Is there a fix for CVE-2026-77091?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-77091 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-77091?

Check whether you run Commvault DataCube at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-77091: Commvault DataCube path traversal in security feature enforcement

CVE-2026-77091 · Severity: high · CVSS 7.8 · Published 2026-09-08

Commvault's DataCube is a data management and backup platform used by enterprises to protect and manage critical business data. A path traversal vulnerability allows attackers to bypass security controls that protect data access and compliance enforcement, potentially exposing sensitive information or allowing unauthorized operations without proper authorization checks.

Vendors: Commvault.

Quick answers

Is CVE-2026-77091 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-77091 being exploited in the wild.
How severe is CVE-2026-77091?: High severity, with a CVSS score of 7.8, published 8 September 2026.
Which products and versions are affected?: Commvault DataCube 11.36.0 through 11.46.19 (specific ranges: 11.36.0-11.36.122, 11.40.0-11.40.71, 11.44.0-11.44.19, 11.46.0-11.46.19).
Is there a fix for CVE-2026-77091?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-77091 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-77091?: Check whether you run Commvault DataCube at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is a path traversal issue in Commvault DataCube that affects security feature enforcement. The attack vector is network-based, likely requiring authenticated access or ability to interact with affected components (Content Extractor and Index Store). By manipulating file paths, an attacker can circumvent security controls designed to enforce data access policies and compliance checks. The vulnerability impacts versions 11.46.0-11.46.19, 11.44.0-11.44.19, 11.40.0-11.40.71, and 11.36.0-11.36.122 across Linux and Windows platforms. Commvault has released patched versions (11.46.20+, 11.44.20+, 11.40.72+, and 11.36.123+) and recommends immediate upgrade.

Affected products

Commvault DataCube 11.36.0 through 11.46.19 (specific ranges: 11.36.0-11.36.122, 11.40.0-11.40.71, 11.44.0-11.44.19, 11.46.0-11.46.19)

Timeline

2026-09-08: disclosed

References

https://documentation.commvault.com/securityadvisories/CV_2026_07_3.html

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