4.3

CVE-2025-24526: mattermost Incorrect Authorization

CVSS: 4.3v3.1MediumAnalyzed
AliasesGHSA-q8p2-2hwc-jw64GO-2025-3481CGA-2965-959g-wrv9
Published 24-02-2025Last modified 24-02-2025
Open JSON

Vulnerability summary

CVE-2025-24526 is a medium (CVSS 4.3) Incorrect Authorization vulnerability in mattermost. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 20.5% of scored vulnerabilities.

Overall risk
17/100
0100
Low · default modelHow is this calculated?
CVSS score
4.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.29%
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 5
OPENSUSE-SU-2025:14889-1CGA-5QFJ-VQWH-4GC2CGA-8WJ6-4MPP-76WJCGA-HWV8-93MV-RFQQCGA-PC24-78V6-7MF7

Timeline

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

Description

Mattermost versions 10.1.x <= 10.1.3, 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 restrict channel export of archived channels when the "Allow users to view archived channels" is disabled which allows a user to export channel contents when they shouldn't have access to it

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.29%

Chance of exploitation in the next 30 days

Percentile

21%

Versus all other CVEs

30-day change

+0.01 pp

From 0.29% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.29%

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≥ 10.1.0, ≤ 10.1.3 | ≥ 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 | ≥ 10.1.0, < 10.1.4 | ≥ 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 | < 8.0.0-20250110161910-96195f1bd746

5 vendors · 8 products

References

8 links