Description
Mattermost versions <=11.9 11.1.9 11.5.8 11.10.7.0 fail to validate Zoom chat line length before slicing which allows an authenticated attacker to crash the Agents plugin via summarizing a Zoom chat transcription containing short continuation lines. Mattermost Advisory ID: MMSA-2026-00723
Published: 2026-10-26
Score: 6.5 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

Vendor Solution

Update Mattermost to versions 11.10.0, 11.9.2, 11.8.6, 11.7.11 or higher.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

References
Link Providers
https://mattermost.com/security-updates cve-icon cve-icon
History

Mon, 26 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 26 Oct 2026 14:00:00 +0000

Type Values Removed Values Added
Description Mattermost versions <=11.9 11.1.9 11.5.8 11.10.7.0 fail to validate Zoom chat line length before slicing which allows an authenticated attacker to crash the Agents plugin via summarizing a Zoom chat transcription containing short continuation lines. Mattermost Advisory ID: MMSA-2026-00723
Title Insufficient length validation when parsing Zoom chat transcriptions
Weaknesses CWE-754
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: Mattermost

Published:

Updated: 2026-10-26T15:35:50.283Z

Reserved: 2026-10-26T13:52:45.402Z

Link: CVE-2026-116516

cve-icon Vulnrichment

Updated: 2026-10-26T15:32:07.536Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-26T14:16:37.813

Modified: 2026-10-26T16:50:49.857

Link: CVE-2026-116516

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-26T16:15:14Z

Weaknesses