🛡️ CVE-2025-36530 — mattermost-server

🟡 CVSS 6.8 — Medium ✅ No Known Exploit CWE-22 NVD
6.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Mattermost Fails to Validate File Paths in github.com/mattermost/mattermost-server

Mattermost Fails to Validate File Paths in github.com/mattermost/mattermost-server.

NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions.

(If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.)

The additional affected modules and versions are: github.com/mattermost/mattermost/server/v8 before v8.0.0-20250619095651-9dd0b3943e55.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs administrative privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality high, integrity none, availability none.

Weakness class

CVE-2025-36530 is classified as CWE-22: Path Traversal. A file path built from user input is not confined to the intended directory, letting an attacker reach files elsewhere on the filesystem.

Affected software

CVE-2025-36530 is recorded against 5 packages.

  • github.com/mattermost/mattermost-server
  • github.com/mattermost/mattermost-server/v5
  • github.com/mattermost/mattermost-server/v6
  • github.com/mattermost/mattermost/server/v8
  • mattermost-server (from 10.9.0 up to 10.9.2)

Timeline and source

Published on 21 August 2025 and last revised on 3 March 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

nvd.nist.gov (Advisory)
github.com (Package)
mattermost.com (Web)
pkg.go.dev (Web)

Details

Severity Medium
CVSS Score 6.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
CWE CWE-22
Public Exploit ✅ No
Source NVD
Published 2025-08-21
Updated 2026-08-12
Modified 2026-03-03
Fix URL N/A

Affected Packages

Software From version Fixed in
github.com/mattermost/mattermost-server — —
github.com/mattermost/mattermost-server/v5 — —
github.com/mattermost/mattermost-server/v6 — —
github.com/mattermost/mattermost/server/v8 — —
mattermost-server 10.9.0 10.9.2

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