# CVE-2026-10600: Denial of service via unbounded document content extraction in Mattermost Server

> CVE-2026-10600: Denial of service via unbounded document content extraction in Mattermost Server. CVSS 4.3 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-10600
Last updated: 2026-08-03T15:24:46Z

- Published: 2026-07-27 14:13 UTC · Updated: 2026-08-03 15:24 UTC · Assigner: Mattermost
- CVSS: 4.3 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- EPSS: 0.37%, 30th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-770

## Description

Mattermost versions 11.8.x \<= 11.8.0, 11.7.x \<= 11.7.3, 11.6.x \<= 11.6.5, 10.11.x \<= 10.11.20 fail to bound the time and resource consumption of server-side document content extraction which allows an authenticated user with file-upload permission to degrade file uploads for all users on the server via repeatedly uploading small documents that are cheap to upload but expensive to extract, saturating the shared extraction worker pool.. Mattermost Advisory ID: MMSA-2026-00694

## 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-2026-10600)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-10600)
- [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-2026-10600 · Markdown: https://rewindex.com/cve/CVE-2026-10600.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-10600 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:14:35.783Z