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SCA: security update for github.com/mattermost/mattermost-plugin-msteams (GHSA-5rfv-h47g-xj42)

medium Tenable Cloud Security Plugin ID 441019

Description

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

 - Mattermost Plugins versions <=2.1.3.0 fail to limit the request body size on the {{/changes}} webhook
 endpoint which allows an authenticated attacker to cause memory exhaustion and denial of service via
 sending an oversized JSON payload. Mattermost Advisory ID: MMSA-2026-00611 (CVE-2026-24661)

Solution

Update the github.com/mattermost/mattermost-plugin-msteams library and its related packages to version 1.15.1-0.20260213190728-6fe4d295592e or later.

See Also

https://github.com/advisories/GHSA-5rfv-h47g-xj42

Plugin Details

Severity: Medium

ID: 441019

Version: Revision 1.3

Type: Local

Family: SCA Checks

Published: 4/30/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.73

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-24661

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 4/9/2026

Vulnerability Publication Date: 4/9/2026

Reference Information

CVE: CVE-2026-24661

cwe: CWE-770