# CVE-2026-4053: post edit time limit is not enforced on some post update operations

> CVE-2026-4053: post edit time limit is not enforced on some post update operations. CVSS 3.1 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-4053
Last updated: 2026-06-17T10:55:54Z

- Published: 2026-05-15 18:42 UTC · Updated: 2026-06-17 10:55 UTC · Assigner: Mattermost
- CVSS: 3.1 (CVSS 3.1) · Severity: Low · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
- EPSS: 0.16%, 6th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-672

## Description

Mattermost versions 11.5.x \<= 11.5.1, 10.11.x \<= 10.11.13 fail to enforce the PostEditTimeLimit on non-message post fields which allows an authenticated user to modify post file attachments, props, and pin status after the edit window has expired via the post patch and update API endpoints.. Mattermost Advisory ID: MMSA-2026-00631

## 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-2026-4053)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-4053)
- [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-2026-4053 · Markdown: https://rewindex.com/cve/CVE-2026-4053.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-4053 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:13:08.979Z