Unauthorized Command Execution in Archived Channels

published 2025-03-21 19 mo ago modified 2026-06-17 4 mo ago also BIT-mattermost-2025-25274 , EUVD-2025-7223 , GHSA-4v65-xqcj-wpgg , GO-2025-3550

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 32%
public exploits: 0; none known

Mattermost versions 10.4.x <= 10.4.2, 10.3.x <= 10.3.3, 9.11.x <= 9.11.8 fail to restrict command execution in archived channels, which allows authenticated users to run commands in archived channels.

Patch / fix

fixed in 4 distros 1

go github.com/mattermost/mattermost/server/v8 9.11.9, 10.3.4, 10.4.3, 10.5.1
bitnami mattermost 10.0.0, 10.5.1
go github.com/mattermost/mattermost-server 9.11.9+incompatible, 10.3.4+incompatible, 10.4.3+incompatible, 10.5.1+incompatible
Mattermost Mattermost 9.11.9, 10.3.4, 10.4.3, 10.5.0

govulncheck-vulndb openSUSE Tumbleweed 0.0.20250327T184518-1.1

opensuse advisories openSUSE-SU-2025:14937-1

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 19 mo ago (2025-03-21)

Exploit prediction

0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
GitHub	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
OSV	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
go	github.com/mattermost/mattermost/server/v8	>=10.4.0, <10.4.3 >=10.3.0, <10.3.4 >=9.11.0, <9.11.9 >=10.5.0, <10.5.1 all versions	10.4.3 10.3.4 9.11.9 10.5.1
bitnami	mattermost	>=9.11.0, <10.0.0 >=10.3.0, <10.5.1	10.0.0 10.5.1
go	github.com/mattermost/mattermost-server	>=9.11.0+incompatible, <9.11.9+incompatible >=10.3.0+incompatible, <10.3.4+incompatible >=10.4.0+incompatible, <10.4.3+incompatible >=10.5.0+incompatible, <10.5.1+incompatible	9.11.9+incompatible 10.3.4+incompatible 10.4.3+incompatible 10.5.1+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-863 Incorrect Authorization
CWE-77 Improper Neutralization of Special Elements used in a Command

References

mattermost.com /security-updates
web, vendor-advisory
nvd.nist.gov /vuln/detail/CVE-2025-25274
advisory, web
github.com /mattermost/mattermost
package
github.com /advisories/GHSA-4v65-xqcj-wpgg
advisory

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.

Summary