Is CVE-2026-24661 actively exploited?

CVE-2026-24661 has no public evidence of in-the-wild exploitation as of 2026-04-17.

What is the CVSS score for CVE-2026-24661?

CVE-2026-24661 has a CVSS score of 3.7 (LOW severity). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.

How do I patch CVE-2026-24661?

Patch guidance is available from mattermost security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-24661.

Which products are affected by CVE-2026-24661?

1 product: mattermost mattermost.

CVE-2026-24661 - remediation guidance & executive summary

Description

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

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector: network
Complexity: high
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: low
Weaknesses: CWE-770

Metadata

Primary Vendor: MATTERMOST
Published: 4/9/2026
Last Modified: 4/17/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

mattermost : mattermost

Remediation Guidance

Executive Summary

Cite this page

CVE-2026-24661. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2026-24661

View on NIST NVD

CVE-2026-24661 vulnerability