Detections
Analytics

SCA: security update for github.com/mattermost/mattermost-plugin-github, github.com/mattermost/mattermost-server (GHSA-rmvv-8v8w-rf7x)

medium Tenable Cloud Security Plugin ID 444105

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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
 validate user-supplied input in API request handlers which allows an authenticated attacker to crash the
 plugin process via a crafted HTTP request to the PR details endpoint.. Mattermost Advisory ID:
 MMSA-2026-00638 (CVE-2026-4646)

Solution

Update the github.com/mattermost/mattermost-plugin-github library and its related packages to version 1.0.1-0.20260330164815-c2840e980b3c or later.

See Also

https://github.com/advisories/GHSA-rmvv-8v8w-rf7x

Plugin Details

Severity: Medium

ID: 444105

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 6/29/2026

Updated: 6/29/2026

Risk Information

VPR

Risk Factor: Low

Score: 2.2

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:P

CVSS Score Source: CVE-2026-4646

CVSS v3

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.8

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 5/26/2026

Vulnerability Publication Date: 5/22/2026

Reference Information

CVE: CVE-2026-4646