# CVE-2026-18228: Commvault HyperScale path traversal in information disclosure

Source: https://junglewise.ai/threats/cve-2026-18228-hyperscale-contained-a-path-traversal-issue-affecting-information  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-18228 · Severity: info · Published 2026-10-13

Commvault HyperScale is a backup and recovery platform used by enterprises to protect critical data. A path traversal vulnerability allows an attacker to access files and information they should not be able to reach, potentially exposing sensitive data stored in the backup system.

Technologies: [Commvault](https://junglewise.ai/threats/technologies/commvault). Vendors: [Commvault](https://junglewise.ai/threats/vendors/commvault).

## Quick answers

**Is CVE-2026-18228 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-18228 being exploited in the wild.

**How severe is CVE-2026-18228?** Informational severity, published 13 October 2026.

**Which products and versions are affected?** Commvault 11.46.0–11.46.29, 11.44.0–11.44.24, 11.40.0–11.40.77, 11.36.0–11.36.126.

**Is there a fix for CVE-2026-18228?** Yes: fixed in Commvault 11.46.30, 11.44.25, 11.40.78, 11.36.127 and higher. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-18228 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-18228?** Check whether you run Commvault 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.

## How to fix

- Fixed in Commvault 11.46.30, 11.44.25, 11.40.78, 11.36.127 and higher

## Technical details

A path traversal vulnerability in HyperScale MediaAgents allows an attacker to traverse the file system and disclose sensitive information. The vulnerability affects Commvault on Linux platforms across multiple version branches. Exploitation requires network access to the affected MediaAgent component.

## Affected products

- Commvault Commvault 11.46.0–11.46.29, 11.44.0–11.44.24, 11.40.0–11.40.77, 11.36.0–11.36.126

## Timeline

- 2026-10-13: disclosed

## References

- [https://documentation.commvault.com/securityadvisories/CV_2026_10_8.html](https://documentation.commvault.com/securityadvisories/CV_2026_10_8.html)

## Related threats

- [Commvault network messaging layer decompression resource exhaustion](https://junglewise.ai/threats/cve-2026-97334-the-network-messaging-layer-contained-improper-handling-of-highly)
- [Commvault QAPI stack-based buffer overflow](https://junglewise.ai/threats/cve-2026-97333-qapi-contained-a-stack-based-buffer-overflow-affecting-service)
- [Commvault CVFS missing authentication in command execution](https://junglewise.ai/threats/cve-2026-77096-cvfs-contained-a-missing-authentication-condition-affecting)
- [Commvault null pointer dereference in CvFWD](https://junglewise.ai/threats/cve-2026-77095-cvfwd-contained-a-null-pointer-dereference-affecting-service)
- [Commvault CvFWD out-of-bounds write denial of service](https://junglewise.ai/threats/cve-2026-77094-cvfwd-contained-an-out-of-bounds-write-affecting-service)