Mattermost versions 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to validate the user permission when accessing the files and subscribing to the block in Boards, which allows an authenticated user to access other board files and was able to subscribe to the block from other boards that the user does not have access to
History

Thu, 27 Nov 2025 12:00:00 +0000

Type Values Removed Values Added
Description github.com/nwaples/rardecode versions <=2.1.1 fail to restrict the dictionary size when reading large RAR dictionary sizes, which allows an attacker to provide a specially crafted RAR file and cause Denial of Service via an Out Of Memory Crash. Mattermost versions 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to validate the user permission when accessing the files and subscribing to the block in Boards, which allows an authenticated user to access other board files and was able to subscribe to the block from other boards that the user does not have access to
Title DoS via Out Of Memory Crash Unauthorized access and subscription vulnerability in Boards
Weaknesses CWE-306
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

cvssV3_1

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


Sat, 11 Oct 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Fri, 10 Oct 2025 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 10 Oct 2025 11:30:00 +0000

Type Values Removed Values Added
Description github.com/nwaples/rardecode versions <=2.1.1 fail to restrict the dictionary size when reading large RAR dictionary sizes, which allows an attacker to provide a specially crafted RAR file and cause Denial of Service via an Out Of Memory Crash.
Title DoS via Out Of Memory Crash
Weaknesses CWE-789
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Mattermost

Published: 2025-10-10T11:15:15.163Z

Updated: 2025-11-27T11:47:34.073Z

Reserved: 2025-10-10T09:12:41.410Z

Link: CVE-2025-11579

cve-icon Vulnrichment

Updated: 2025-10-10T12:41:18.185Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-10-10T12:15:37.743

Modified: 2025-11-27T12:15:47.060

Link: CVE-2025-11579

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-10-10T11:15:15Z

Links: CVE-2025-11579 - Bugzilla