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Fencer Vulns
medium 6.7

CVE-2023-4107 json

Incorrect authorization allows a user manager to update a system admin

published 2023-08-11 3 y ago modified 2026-06-17 4 mo ago also GHSA-6xjj-v76v-fwpj , EUVD-2023-2228

cvss
6.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits
0
none known

Summary

Mattermost fails to properly validate the requesting user permissions when updating a system admin, allowing a user manager to update a system admin's details such as email, first name and last name.

Patch / fix

  • go github.com/mattermost/mattermost-server/v6 7.8.8, 7.9.6, 7.10.4
  • Mattermost Mattermost 7.8.8, 7.9.6, 7.10.4

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.7 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
GitHub 3.1 6.7 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L

Affected packages

ecosystem package affected fixed in
go github.com/mattermost/mattermost-server/v6
<7.8.8
>=7.9.0, <7.9.6
>=7.10.0, <7.10.4
7.8.8
7.9.6
7.10.4

Affected products

  • Mattermost Mattermost

Classification

Weakness

References

Sources

Fencer Vulns 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.