CVE-2026-2578

MediumCVSS 4.3/10Last modified Jun 17, 2026

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

Metrics

CVSS 3.1 4.3/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

CWE-201

Affected software

Vendor	Product	Versions
Mattermost	Mattermost	>= 11.3.0, <= 11.3.0

References

https://mattermost.com/security-updatesVendor Advisory

Timeline

Published: Mar 16, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

Related CVEs from 2026

CVE-2026-257804.3Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to bound memory allocation when processing DOC files which CVE-2026-257818.4in OpenHarmony v6.0 and prior versions allow a local attacker cause DOS and it cannot be recovered.CVE-2026-257825.3Gitea versions before 1.25.5 look up tracked-time entries by time ID without scoping the lookup to the issue in the request URL, allowing de CVE-2026-257834.3Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to properly validate User-Agent header tokens which allows CVE-2026-257849.8Initialization of a Resource with an Insecure Default vulnerability in Hallo Welt! GmbH BlueSpice (container image bluespice/wiki) allows pr CVE-2026-257859.3Path traversal vulnerability exists in Lanscope Endpoint Manager (On-Premises) Sub-Manager Server Ver.9.4.7.3 and earlier, which may allow a CVE-2026-257869.1Affected devices do not properly validate and sanitize PLC/station name rendered on the "communication" parameters page of the web interface CVE-2026-257879.1Affected devices do not properly validate and sanitize Technology Object (TO) name rendered on the "Motion Control Diagnostics" page of the CVE-2026-257897.1Affected devices do not properly validate and sanitize filenames on the Firmware Update page. This could allow a remote attacker to social CVE-2026-25797.5The WowStore – Store Builder & Product Blocks for WooCommerce plugin for WordPress is vulnerable to SQL Injection via the ‘search’ parameter CVE-2026-257907.2Wazuh is a free and open source platform used for threat prevention, detection, and response. Starting in version 3.9.0 and prior to version CVE-2026-257917.5Sliver is a command and control framework that uses a custom Wireguard netstack. Prior to 1.7.0, the DNS C2 listener accepts unauthenticated