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CVE-2026-2578

—
CVSS 3.1
4.3 medium
EPSS
<1%p12
Published
()
Modified
Description

Mattermost versions 11.3.x <= 11.3.0 fail to preserve the redacted state of burn-on-read posts during deletion which allows channel members to access unrevealed burn-on-read message contents via the WebSocket post deletion event.. Mattermost Advisory ID: MMSA-2026-00579

Vendors
mattermost
Products
mattermost server
Weakness
CWE-201
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD CVE.org GitHub PoCs EPSS (0.2%)

In the news

No ingested article mentions this CVE yet.