GitroomHQ postiz-app up to 2.25.2 Media Path path traversal

Summaryinfo

A vulnerability, which was classified as critical, has been found in GitroomHQ postiz-app up to 2.25.2. Affected by this issue is some unknown functionality of the component Media Path Handler. The manipulation leads to path traversal. This vulnerability is traded as CVE-2026-115932. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in GitroomHQ postiz-app up to 2.25.2 and classified as critical. This issue affects an unknown functionality of the component Media Path Handler. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

When a post is published, Postiz treats a media path that is not a web address as a file on the server's disk, but it does not check that the file lies inside the upload directory. A registered user can store a crafted media path with a post, get it past the checks that normally restrict it, and have the publishing worker read an arbitrary file and send it as an attachment to a Discord server the user controls. The same unconfined reads can be reached through two further routes. One tells the caller whether a file exists and can exhaust the backend's memory, the other delivers the file the same way as the main route. Self-registration is open by default, so the attacker needs no existing account.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-115932 since 10/23/2026. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

Upgrading to version 2.25.3 eliminates this vulnerability.

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Productinfo

Vendor

• GitroomHQ

Name

• postiz-app

Version

• 2.25.0
• 2.25.1
• 2.25.2

CPE 2.3info

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CPE 2.2info

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