CVE-2026-25780

| EUVD-2026-12430 MEDIUM
2026-03-16 Mattermost GHSA-xv2p-wchj-qjhp
4.3
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

Lifecycle Timeline

4
Patch Released
Mar 31, 2026 - 21:13 nvd
Patch available
Analysis Generated
Mar 16, 2026 - 14:00 vuln.today
EUVD ID Assigned
Mar 16, 2026 - 14:00 euvd
EUVD-2026-12430
CVE Published
Mar 16, 2026 - 12:59 nvd
MEDIUM 4.3

Tags

Denial Of Service Mattermost Suse

Description

Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to bound memory allocation when processing DOC files which allows an authenticated attacker to cause server memory exhaustion and denial of service via uploading a specially crafted DOC file.. Mattermost Advisory ID: MMSA-2026-00581

Analysis

Mattermost versions 11.3.0, 11.2.2, and 10.11.10 and earlier lack proper memory bounds checking when processing DOC file uploads, enabling authenticated attackers to trigger server memory exhaustion and denial of service. An attacker with valid credentials can upload a specially crafted DOC file to exhaust available memory and crash the Mattermost server. …

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Remediation

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

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Priority Score

22
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +22
POC: 0

Vendor Status

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CVE-2026-25780 vulnerability details – vuln.today
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