CVE-2024-8071

System Role with edit access to permissions can elevate themselves to system admin

HIGH
7.2
CVSS Score
Published: August 22, 2024 at 06:39 AM UTC
Updated: June 17, 2026 at 08:21 AM UTC
1 product affected across 1 vendorMattermost

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Severity
HIGH7.2
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

Mattermost versions 9.9.x <= 9.9.1, 9.5.x <= 9.5.7, 9.10.x <= 9.10.0 and 9.8.x <= 9.8.2 fail to restrict which roles can promote a user as system admin which allows a System Role with edit access to the permissions section of system console to update their role (e.g. member) to include the `manage_system` permission, effectively becoming a System Admin.

Affected

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

9.10.0 ≤ v < 9.10.19.5.0 ≤ v ≤ 9.5.79.5.0 ≤ v < 9.5.89.8.0 ≤ v ≤ 9.8.29.8.0 ≤ v < 9.8.39.9.0 ≤ v ≤ 9.9.19.9.0 ≤ v < 9.9.29.10.09.5.09.8.09.9.0
Vendor states this is fixed in 9.10.1 (unaffected)
Vendor states this is fixed in 9.11.0 (unaffected)
Vendor states this is fixed in 9.5.8 (unaffected)
Vendor states this is fixed in 9.8.3 (unaffected)
Vendor states this is fixed in 9.9.2 (unaffected)

Remediation

No guide yet

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

Patch and advisory references

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

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

Quick Info

StatusANALYZED
CWE
CWE-284NVD-CWE-Other

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