4.3

CVE-2025-3611: Improper Access Control in Mattermost allows System Managers to view team details despite role restrictions

Analyzed
AliasesGHSA-86jg-35xj-3vv5GO-2025-3728
Published 30-05-2025Last modified 30-05-2025

Vulnerability summary

CVE-2025-3611 is a medium (CVSS 4.3) Incorrect Authorization vulnerability in mattermost. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 14.3% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 3.1, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
4.3/10
010
Medium · v3.1 (NVD)
EPSS score
0.23%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 2
OPENSUSE-SU-2025:15225-1CGA-2GXX-5QQP-J784

Timeline

  1. 30-05-2025
    PublishedVulnerability first disclosed.
  2. 30-05-2025
    Last modifiedVulnerability information updated.

Description

Mattermost versions 10.7.x <= 10.7.0, 10.5.x <= 10.5.3, 9.11.x <= 9.11.12 fails to properly enforce access control restrictions for System Manager roles, allowing authenticated users with System Manager privileges to view team details they should not have access to via direct API requests to team endpoints, even when explicitly configured with 'No access' to Teams in the System Console.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

14%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.22% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Github.com/mattermost/mattermost-server2 products
  • v5All versions (No fix recorded)
  • v6All versions (No fix recorded)
Mattermost2 products
  • mattermost10.7.0 | ≥ 10.5.0, ≤ 10.5.3 | ≥ 9.11.0, ≤ 9.11.12
  • mattermost_serverEOL≥ 9.11.0, < 9.11.13 | ≥ 10.5.0, < 10.5.4 | 10.7.0 | 10.7.0:rc1 | 10.7.0:rc2
Github.com/mattermost1 product
  • mattermost-server≥ 10.6.0-rc1+incompatible, < 10.7.1+incompatible
Github.com/mattermost/mattermost/server1 product
  • v8≥ 10.6.0-rc1, < 10.7.1 | ≥ 10.0.0-rc1, < 10.5.4 | ≥ 9.0.0-rc1, < 9.11.13 | < 8.0.0-20250414154356-6f33b721de76

4 vendors · 6 products

References

5 links