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CVE-2025-24526— Channel export permitted on archived channel when viewing archived channels is disabled

Quick assessment

Affected
Mattermost Mattermost
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mattermost是美国Mattermost公司的一个开源协作平台。 Mattermost存在安全漏洞，该漏洞源于未能正确限制已归档频道的导出，导致用户可导出内容。

CVSS 4.3 · Medium EPSS 0.29% · P21

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2025-24526

Vulnerability Information
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Vulnerability Title
Channel export permitted on archived channel when viewing archived channels is disabled
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost versions 10.1.x <= 10.1.3, 10.4.x <= 10.4.1, 9.11.x <= 9.11.7, 10.3.x <= 10.3.2, 10.2.x <= 10.2.2 fail to restrict channel export of archived channels when the "Allow users to view archived channels" is disabled which allows a user to export channel contents when they shouldn't have access to it
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Mattermost 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mattermost是美国Mattermost公司的一个开源协作平台。 Mattermost存在安全漏洞，该漏洞源于未能正确限制已归档频道的导出，导致用户可导出内容。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Mattermost Mattermost 10.1.0 ~ 10.1.3 -

II. Public POCs for CVE-2025-24526

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III. Intelligence Information for CVE-2025-24526

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Same Patch Batch · Mattermost · 2025-02-24 · 5 CVEs total

CVE-2025-20051 9.9 CRITICAL Arbitrary file read via block duplication in Mattermost Boards
CVE-2025-25279 9.9 CRITICAL Arbitrary file read in Mattermost Boards via import & export board archive
CVE-2025-24490 9.6 CRITICAL SQL Injection in Mattermost Boards via board category ID reordering
CVE-2025-1412 3.1 LOW Session Persistence After User-to-Bot Conversion

IV. Related Vulnerabilities

Same product: Mattermost
Same vendor: Mattermost
Same weakness: CWE-863

V. Comments for CVE-2025-24526

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