CVE-2024-8071
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedMattermost 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceThis is a privilege escalation vulnerability in Mattermost where the system fails to properly restrict role modification permissions. A user with a System Role that has edit access to the permissions section of the system console can add the `manage_system` permission to their own role, effectively escalating themselves to System Admin privileges.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data>= 9.5.0, < 9.5.8>= 9.8.0, < 9.8.3>= 9.9.0, < 9.9.2>= 9.10.0, < 9.10.1CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify installed Mattermost versionLog into the Mattermost System Console and navigate to About > Edition and License, or run the CLI command 'mattermost version' if you have server access. Compare the version number against the affected ranges: 9.5.0-9.5.7, 9.8.0-9.8.2, 9.9.0-9.9.1, and 9.10.0.Affected if The installed version falls within any of the listed vulnerable version ranges.
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Review System Roles with permissions accessIn the System Console, navigate to User Management > Roles. Identify any custom System Roles that have been granted access to the Permissions section of the System Console. These roles can modify permission schemes.Affected if Any custom System Role exists that has edit or manage access to the permissions configuration in the System Console.
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Audit role permissions for unauthorized manage_systemIn the System Console under User Management > Roles, examine each custom System Role and check whether the manage_system permission has been added to that role. Compare current role permissions against default role definitions.Affected if Any custom System Role contains the manage_system permission and that permission was not assigned by default.
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Check for unexpected System AdminsIn the System Console under User Management > Users, review the list of users who have System Admin privileges. Cross-reference with known administrators and verify that all System Admin accounts are expected.Affected if There are System Admin users who should not have elevated privileges or who were not explicitly granted admin rights through normal administrative processes.
You are affected if your Mattermost version is within the vulnerable ranges AND any custom System Role has permissions section edit access, particularly if the manage_system permission appears in unexpected roles or unauthorized users have System Admin access.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped9.5.89.8.39.9.2
Upgrade to Mattermost versions 9.9.2, 9.5.8, 9.10.1, or 9.8.3 or later. Additionally, review user role assignments and restrict System Role access to only trusted administrators until patches are applied.
Upgrade to Mattermost 9.5.8, 9.8.3, 9.9.2, or 9.10.1 (whichever corresponds to your current major.minor branch)
- 1. Identify the currently running Mattermost version using the system console or CLI
- 2. Based on the current version, determine the appropriate upgrade target: For 9.5.x (where x is 0-7) upgrade to 9.5.8; For 9.8.x (where x is 0-2) upgrade to 9.8.3; For 9.9.x (where x is 0-1) upgrade to 9.9.2; For 9.10.0 upgrade to 9.10.1
- 3. Review Mattermost upgrade documentation for your deployment type (self-hosted or Mattermost Cloud)
- 4. Perform a full backup of the database and configuration files before upgrading
- 5. Upgrade the Mattermost server to the appropriate fixed version
- 6. Verify the upgrade was successful by checking the version in the system console
- 7. Review user roles and permissions in the system console to ensure no unauthorized privilege escalation occurred
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation6.0 h
- Testing5.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-8071 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2024-8071 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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