# CVE-2026-3108: Terminal Escape Injection in mmctl Report Posts Command

> CVE-2026-3108: Terminal Escape Injection in mmctl Report Posts Command. CVSS 8.0 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-3108
Last updated: 2026-06-17T10:43:03Z

- Published: 2026-03-26 16:16 UTC · Updated: 2026-06-17 10:43 UTC · Assigner: Mattermost
- CVSS: 8.0 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
- EPSS: 0.28%, 21th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-150

## Description

Mattermost versions 11.2.x \<= 11.2.2, 10.11.x \<= 10.11.10, 11.4.x \<= 11.4.0, 11.3.x \<= 11.3.1 fail to sanitize user-controlled post content in the mmctl commands terminal output which allows attackers to manipulate administrator terminals via crafted messages containing ANSI and OSC escape sequences that enable screen manipulation, fake prompts, and clipboard hijacking.. Mattermost Advisory ID: MMSA-2026-00599

## 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-2026-3108)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-3108)
- [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-2026-3108 · Markdown: https://rewindex.com/cve/CVE-2026-3108.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-3108 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:49:50.733Z