Unrated severityNVD Advisory· Published Jun 26, 2026· Updated Jun 26, 2026
Client4 fails to validate path parameters
CVE-2026-13426
Description
The Mattermost Go module github.com/mattermost/mattermost/server/public versions < v0.1.22 fail to validate path parameters when constructing API route paths which allows an attacker to redirect API calls to unintended endpoints via crafted IDs containing path traversal components. Mattermost Advisory ID: MMSA-2025-00532
Patches
Vulnerability mechanics
References
1- mattermost.com/security-updatesmitrevendor-advisory
News mentions
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