3.8

CVE-2025-22449: mattermost Incorrect Authorization

CVSS: 3.8v3.1LowAnalyzed
AliasesGHSA-q8fg-cp3q-5jwmGO-2025-3377CGA-8547-wp3w-cc76
Published 09-01-2025Last modified 09-01-2025
Open JSON

Vulnerability summary

CVE-2025-22449 is a low (CVSS 3.8) Incorrect Authorization vulnerability in mattermost. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 18.5% of scored vulnerabilities.

Overall risk
15/100
0100
Low · default modelHow is this calculated?
CVSS score
3.8/10
010
Low · v3.1 (CVE.org)
EPSS score
0.27%
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 2 · Related 6
OPENSUSE-SU-2025:14644-1SUSE-SU-2025:0297-1CGA-78CP-J4F3-8XM3CGA-CJ3J-FH9J-WQGCCGA-V58H-PRFG-33C6CGA-XWQ2-82G5-VM5W

Timeline

  1. 09-01-2025
    PublishedVulnerability first disclosed.
  2. 09-01-2025
    Last modifiedVulnerability information updated.

Description

Mattermost versions 9.11.x <= 9.11.5 fail to enforce invite permissions, which allows team admins, with no permission to invite users to their team, to invite users by updating the "allow_open_invite" field via making their team public.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.27%

Chance of exploitation in the next 30 days

Percentile

19%

Versus all other CVEs

30-day change

-0.01 pp

From 0.28% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.27%

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
Github.com/mattermost1 product
  • mattermost-server≥ 9.11.0+incompatible (No fix recorded)
Github.com/mattermost/mattermost/server1 product
  • v8≥ 9.11.0, < 9.11.6 | < 8.0.0-20250102081831-64c566a8280b

5 vendors · 8 products

References

5 links