# CVE-2026-93846: Team admin can escalate a team member's permissions via the team member roles endpoint

> CVE-2026-93846: Team admin can escalate a team member's permissions via the team member roles endpoint. CVSS 3.8 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-93846
Last updated: 2026-11-02T20:18:04Z

- Published: 2026-10-26 15:58 UTC · Updated: 2026-11-02 20:18 UTC · Assigner: Mattermost
- CVSS: 3.8 (CVSS 3.1) · Severity: Low · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
- EPSS: 0.15%, 4th percentile (scored 2026-11-03)
- CISA KEV: no
- CWE: CWE-863

## Description

Mattermost versions 11.7.x \<= 11.7.10 fail to restrict which built-in roles can be assigned to a team member via the API, which allows a team admin to grant a team member permissions beyond those permitted by the configured permission scheme via the {{update-team-member-roles}} REST API.. Mattermost Advisory ID: MMSA-2026-00734

## Affected vendors and products

- Mattermost: Mattermost

## Tracked companies

- [Mattermost](https://rewindex.com/company/mattermost.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-93846)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-93846)
- [https://mattermost.com/security-updates](https://mattermost.com/security-updates)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-93846 · Markdown: https://rewindex.com/cve/CVE-2026-93846.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-93846 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T15:55:18.872Z