๐Ÿ›ก๏ธ CVE-2026-4858
๐ŸŸ  CVSS 8.0 โ€” High โœ… No Known Exploit CWE-22 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to check integration URL for path traversal which allows an malicious authenticated user to call an arbitrary API via system admin Mattermost auth token using via path traversal in integration action URL.. Mattermost Advisory ID: MMSA-2026-00640

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
CWE CWE-22
Public Exploit โœ… No
Source NVD
Published 2026-05-21
Updated 2026-06-02
Modified 2026-05-21
Fix URL N/A

Affected Packages

Software From version Fixed in
mattermost-server โ€” โ€”

References

Similar Threats

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