CVE-2026-4053GO-2026-5442GHSA-HW87-6JCQ-9F8Q
post edit time limit is not enforced on some post update operations
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 0.0.0-20260414103857-b21ef302025e, 11.5.2+incompatible, 11.5.2
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
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
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Mattermost Mattermost
From 11.5.0 · through 11.5.1; From 10.11.0 · through 10.11.13
- github.com/mattermost/mattermost-serverGo
From 0.0.0-20250731163400-5b955468ea1e · fixed in 0.0.0-20260414103857-b21ef302025e; From 11.5.0+incompatible · fixed in 11.5.2+incompatible
- github.com/mattermost/mattermost-serverGo
From 11.5.0 · fixed in 11.5.2
- github.com/mattermost/mattermost-serverGo
From 0.0.0-20250731163400-5b955468ea1e · fixed in 0.0.0-20260414103857-b21ef302025e