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Vulnerabilities / CVE-2025-4981

critical

CVE-2025-4981

Mattermost allows authenticated users to write files to arbitrary locations

Published Modified CWE 427
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

GHSA10.0CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by GHSA.

Description

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.

Affected packages and fixed versions

SourcePackageFixed in
go::GitHub Security Advisory Gogithub.com/mattermost/mattermost-server, github.com/mattermost/mattermost/server/v80.0.0-20250519205859-65aec10162f6 and 1 more
Show all 2 entries from 1 source
SourcePackageFixed in
go::GitHub Security Advisory Gogithub.com/mattermost/mattermost-server0.0.0-20250519205859-65aec10162f6
go::GitHub Security Advisory Gogithub.com/mattermost/mattermost/server/v88.0.0-20250519205859-65aec10162f6, 10.5.6, 9.11.16, 10.8.1, 10.7.3, 10.6.6

References

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.