CVE-2023-2515 Privilege escalation to system admin via personal access tokens

What is CVE-2023-2515?

CVE-2023-2515 is a medium-severity vulnerability in Mattermost Mattermost Server, published on 12 May 2023. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Mattermost fails to restrict a user with permissions to edit other users and to create personal access tokens from elevating their privileges to system admin

Weakness: CWE-863

Which versions are affected by CVE-2023-2515?

9 open source packages ship an affected version, including github.com/mattermost/mattermost-server/v6 and mattermost. It affects 1 product.

Products include Mattermost Mattermost Server.

How do I fix CVE-2023-2515?

Upgrade github.com/mattermost/mattermost-server/v6 to a fixed version for your release line: 7.1.8, 7.7.4, 7.8.3 or 7.9.2.

Is CVE-2023-2515 being exploited?

There is no known exploitation of CVE-2023-2515 in the wild and no public exploit code.

Other vulnerabilities in Mattermost Mattermost Server

• CVE-2025-12419 Account takeover on OAuth/OpenID-enabled servers Critical 9.9
• CVE-2025-12421 Account Takeover via Code Exchange Endpoint Critical 9.9
• CVE-2025-4981 Path Traversal Leading to RCE by Any Authenticated Mattermost User Critical 9.9
• CVE-2025-20051 Arbitrary file read via block duplication in Mattermost Boards Critical 9.9
• CVE-2025-25279 Arbitrary file read in Mattermost Boards via import & export board archive Critical 9.9

All Mattermost Mattermost Server vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-mattermost-2023-2515, GHSA-7g2v-2frm-rg94.