Bug 2447992 (CVE-2026-25780) - CVE-2026-25780 github.com/mattermost/mattermost-server: Memory Exhaustion via Malformed DOC File Upload
Summary: CVE-2026-25780 github.com/mattermost/mattermost-server: Memory Exhaustion via...
Keywords:
Status: NEW
Alias: CVE-2026-25780
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2448059 2448060
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-16 14:01 UTC by OSIDB Bzimport
Modified: 2026-03-16 15:57 UTC (History)
0 users

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Description OSIDB Bzimport 2026-03-16 14:01:58 UTC 
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
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