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CVE-2026-13426

MEDIUM
5.4
CVSS 3.1
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

Metadata

CVE ID
CVE-2026-13426
State
PUBLISHED
Assigner
Mattermost
Reserved
2026-06-26 13:32 UTC
Published
2026-06-26 13:47 UTC
Last updated
2026-06-26 14:39 UTC
Primary CWE
CWE-22
CWE-22: Improper Limitation of a Pathname to a Restricted Di…
Vendor / Product
Mattermost / github.com/mattermost/mattermost/server/public
Sources
cve.org  ·  NVD

Severity & Metrics

5.4 MEDIUM CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
SSVC — CISA Coordinator
Exploitation
none
Automatable
no
Tech. Impact
partial
Affected products (1)
VendorProductPlatformVersions
Mattermost github.com/mattermost/mattermost/server/public — v0.0.0 < v0.1.22, v0.1.22
Weakness (CWE)
CWESourceDescription
CWE-22 cna CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSS scores (1)
ScoreSeverityVersionSourceVector
5.4 MEDIUM 3.1 cna CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
References (1)
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