Mattermost up to 10.8.0 uncontrolled search path

Summaryinfo

A vulnerability has been found in Mattermost up to 9.11.15/10.5.5/10.6.5/10.7.2/10.8.0 and classified as problematic. This vulnerability affects unknown code. This manipulation causes uncontrolled search path. This vulnerability appears as CVE-2025-4981. The attack requires local access. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Mattermost up to 9.11.15/10.5.5/10.6.5/10.7.2/10.8.0 and classified as critical. Affected by this vulnerability is an unknown part. The manipulation with an unknown input leads to a uncontrolled search path vulnerability. The CWE definition for the vulnerability is CWE-427. The product uses a fixed or controlled search path to find resources, but one or more locations in that path can be under the control of unintended actors. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to sanitize filenames in the archive extractor which allows authenticated users to write files to arbitrary locations on the filesystem via uploading archives with path traversal sequences in filenames, potentially leading to remote code execution. The vulnerability impacts instances where file uploads and document search by content is enabled (FileSettings.EnableFileAttachments = true and FileSettings.ExtractContent = true). These configuration settings are enabled by default.

The weakness was presented by Dawid Kulikowski. The advisory is shared at mattermost.com. This vulnerability is known as CVE-2025-4981 since 05/20/2025. The exploitation appears to be difficult. An attack has to be approached locally. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1574 for this issue.

Upgrading to version 9.11.16, 10.5.6, 10.6.6, 10.7.3, 10.8.1 or 10.9.0 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Groupware Software

Name

• Mattermost

Version

• 9.11.0
• 9.11.1
• 9.11.2
• 9.11.3
• 9.11.4
• 9.11.5
• 9.11.6
• 9.11.7
• 9.11.8
• 9.11.9
• 9.11.10
• 9.11.11
• 9.11.12
• 9.11.13
• 9.11.14
• 9.11.15
• 10.0
• 10.1
• 10.2
• 10.3
• 10.4
• 10.5
• 10.5.0
• 10.5.1
• 10.5.2
• 10.5.3
• 10.5.4
• 10.5.5
• 10.6
• 10.6.0
• 10.6.1
• 10.6.2
• 10.6.3
• 10.6.4
• 10.6.5
• 10.7
• 10.7.0
• 10.7.1
• 10.7.2
• 10.8.0

License

• open-source

CPE 2.3info

• 🔍
• 🔍
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CPE 2.2info

• 🔍
• 🔍
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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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