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

No analysis available yet.

Remediation

Vendor Solution

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

Tracking

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Advisories

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

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

No data.

cve-icon NVD

Status : Received

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

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

Link: CVE-2026-116516

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-754

    Improper Check for Unusual or Exceptional Conditions