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Fencer Intel
medium 5.4

CVE-2025-3230 json

Bypass of System Admin User Deactivation Controls for Personal Access Tokens in Mattermost Server

published last yr. modified 4mo ago also GHSA-mc2f-jgj6-6cp3 , GO-2025-3731 , EUVD-2025-16491

cvss
5.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 13%
public exploits
0
none known

Summary

Mattermost versions 10.7.x <= 10.7.0, 10.6.x <= 10.6.2, 10.5.x <= 10.5.3, 9.11.x <= 9.11.12 fails to properly invalidate personal access tokens upon user deactivation, allowing deactivated users to maintain full system access by exploiting access token validation flaws via continued usage of previously issued tokens.

Patch / fix

  • go github.com/mattermost/mattermost/server/v8 8.0.0-20250402193107-65343f84a783, 9.11.13, 10.5.4, 10.6.3, 10.7.1
  • go github.com/mattermost/mattermost-server 9.11.13+incompatible, 10.5.4+incompatible, 10.6.3+incompatible, 10.7.1+incompatible
  • Mattermost Mattermost 9.11.13, 10.5.4, 10.6.3, 10.7.1, 10.8.0
  • govulncheck-vulndb openSUSE Tumbleweed 0.0.20250612T141001-1.1

opensuse advisories openSUSE-SU-2025:15225-1

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
last yr.

Exploit prediction

0.23% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
GitHub 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
go github.com/mattermost/mattermost/server/v8
>=10.7.0-rc1, <10.7.1
>=10.6.0-rc1, <10.6.3
>=10.0.0-rc1, <10.5.4
>=9.0.0-rc1, <9.11.13
<8.0.0-20250402193107-65343f84a783
10.7.1
10.6.3
10.5.4
9.11.13
8.0.0-20250402193107-65343f84a783
go github.com/mattermost/mattermost-server
>=9.0.0-rc1+incompatible, <9.11.13+incompatible
>=10.0.0-rc1+incompatible, <10.5.4+incompatible
>=10.6.0-rc1+incompatible, <10.6.3+incompatible
>=10.7.0-rc1+incompatible, <10.7.1+incompatible
9.11.13+incompatible
10.5.4+incompatible
10.6.3+incompatible
10.7.1+incompatible
go github.com/mattermost/mattermost-server/v5
all versions
 no fix listed
go github.com/mattermost/mattermost-server/v6
all versions
 no fix listed

Affected products

  • Mattermost Mattermost

Classification

Weakness
  • CWE-303 Incorrect Implementation of Authentication Algorithm

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.