9.9

CVE-2025-20051: mattermost Path Traversal

CVSS: 9.9v3.1CriticalAnalyzed
AliasesGHSA-v469-7wp6-7cvpGO-2025-3483CGA-44qh-2rxp-h7jm
Published 24-02-2025Last modified 24-02-2025
Open JSON

Vulnerability summary

CVE-2025-20051 is a critical (CVSS 9.9) Path Traversal vulnerability in mattermost. EPSS estimates a 0.61% chance of exploitation in the next 30 days, higher than 48.1% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.9/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.61%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 6
OPENSUSE-SU-2025:14889-1CGA-338X-P27C-G5P5CGA-45H9-VCPC-R4W7CGA-8V7M-CJ5P-7WRVCGA-9FX9-H8P2-JG62CGA-XMF5-R6WG-G734

Timeline

  1. 24-02-2025
    PublishedVulnerability first disclosed.
  2. 24-02-2025
    Last modifiedVulnerability information updated.

Description

Mattermost versions 10.4.x <= 10.4.1, 9.11.x <= 9.11.7, 10.3.x <= 10.3.2, 10.2.x <= 10.2.2 fail to properly validate input when patching and duplicating a board, which allows a user to read any arbitrary file on the system via duplicating a specially crafted block in Boards.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.61%

Chance of exploitation in the next 30 days

Percentile

48%

Versus all other CVEs

30-day change

+0.01 pp

From 0.60% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.61%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard2 products
  • mattermost-fips-10.5All versions (No fix recorded)
  • mattermost-fips-10.5-compatAll versions (No fix recorded)
Github.com/mattermost/mattermost-server2 products
  • v5All versions (No fix recorded)
  • v6All versions (No fix recorded)
Mattermost2 products
  • mattermost≥ 10.4.0, ≤ 10.4.1 | ≥ 9.11.0, ≤ 9.11.7 | ≥ 10.3.0, ≤ 10.3.2 | ≥ 10.2.0, ≤ 10.2.2
  • mattermost_server≥ 9.11.0, < 9.11.8 | ≥ 10.2.0, < 10.2.3 | ≥ 10.3.0, < 10.3.3 | ≥ 10.4.0, < 10.4.2
Github.com/mattermost1 product
  • mattermost-server≥ 10.4.0-rc1+incompatible, < 10.4.2+incompatible
Github.com/mattermost/mattermost/server1 product
  • v8≥ 9.11.0-rc1, < 9.11.8 | ≥ 10.2.0-rc1, < 10.2.3 | ≥ 10.3.0-rc1, < 10.3.3 | ≥ 10.4.0-rc1, < 10.4.2 | < 8.0.0-20250122165010-4ed702ccff4e

5 vendors · 8 products

References

7 links