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Mattermost doesn't enforce the PostEditTimeLimit on non-message post fields

🗓️ 15 May 2026 21:31:33Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 2 Views

Mattermost 11.5.x–11.5.1 and 10.11.x–10.11.13 fail to enforce PostEditTimeLimit on non‑message fields, enabling edits after window.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-4053
15 May 202618:42
attackerkb
CNNVD
Mattermost 安全漏洞
15 May 202600:00
cnnvd
CVE
CVE-2026-4053
15 May 202618:42
cve
Cvelist
CVE-2026-4053 post edit time limit is not enforced on some post update operations
15 May 202618:42
cvelist
EUVD
EUVD-2026-30586
15 May 202618:42
euvd
NVD
CVE-2026-4053
15 May 202619:17
nvd
OSV
GHSA-HW87-6JCQ-9F8Q Mattermost doesn't enforce the PostEditTimeLimit on non-message post fields
15 May 202621:31
osv
Positive Technologies
PT-2026-41348
15 May 202600:00
ptsecurity
Snyk
Operation on a Resource after Expiration or Release
15 May 202621:32
snyk
Vulners
Node
mattermostmattermost-serverRange0.0.0-20250731163400-5b955468ea1e0.0.0-20260414103857-b21ef302025ego
OR
mattermostmattermost-serverRange11.5.011.5.2go

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28 May 2026 19:26Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.13.1 - 4.3
EPSS0.00071
2