CVE-2025-25274

Unauthorized Command Execution in Archived Channels

HIGH

8.8

CVSS Score

Published: March 21, 2025 at 08:24 AM UTC

Updated: June 17, 2026 at 09:00 AM UTC

2 products affected across 1 vendorMattermost ServerMattermost

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Severity

HIGH8.8

Exploit prediction

EPSS 0.4%

SSVC

No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Mattermost Server · Mattermost

95%

10.3.0 ≤ v < 10.3.410.4.0 ≤ v < 10.4.39.11.0 ≤ v < 9.11.9

Affected range stops below 10.3.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 10.4.3, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.11.9, so it looks safe — our inference, not a vendor statement

Mattermost · Mattermost

60%

10.3.0 ≤ v ≤ 10.3.310.4.0 ≤ v ≤ 10.4.29.11.0 ≤ v ≤ 9.11.810.3.0 10.4.0 9.11.0

Vendor states this is fixed in 10.3.4 (unaffected)

Vendor states this is fixed in 10.4.3 (unaffected)

Vendor states this is fixed in 10.5.0 (unaffected)

Vendor states this is fixed in 9.11.9 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://mattermost.com/security-updates

References (1)

Vendor Advisory

Source: [email protected]

https://mattermost.com/security-updates

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-863CWE-77

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