CVE-2025-24920— Unauthorized Bookmark Creation and Modification in Archived Channels
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，该漏洞源于未限制在归档频道中创建和更新书签，允许认证用户在归档频道中创建或更新书签。
Possible ATT&CK Techniques 1 AI
T1098 · Account Manipulation
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I. Basic Information for CVE-2025-24920
Vulnerability Information
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Vulnerability Title
Unauthorized Bookmark Creation and Modification in Archived Channels
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost versions 10.4.x <= 10.4.2, 10.3.x <= 10.3.3, 9.11.x <= 9.11.8, 10.5.x <= 10.5.0 fail to restrict bookmark creation and updates in archived channels, which allows authenticated users created or update bookmarked in archived channels
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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，该漏洞源于未限制在归档频道中创建和更新书签，允许认证用户在归档频道中创建或更新书签。
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 | 10.4.0 ~ 10.4.2 | - |
|
II. Public POCs for CVE-2025-24920
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Same Patch Batch · Mattermost · 2025-03-21 · 6 CVEs total
| CVE-2025-25068 | 7.5 HIGH | Bypassing MFA Enforcement on Plugin Endpoints |
| CVE-2025-27933 | 5.4 MEDIUM | Unauthorized Private-to-Public Channel Conversion |
| CVE-2025-30179 | 4.3 MEDIUM | MFA Enforcement Bypass in Search APIs |
| CVE-2025-25274 | 4.3 MEDIUM | Unauthorized Command Execution in Archived Channels |
| CVE-2025-27715 | 3.3 LOW | Auto-Enrollment of Team Admins into Private Channels without explicit consent |
IV. Related Vulnerabilities
Same product: Mattermost
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CVE-2026-75587
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CVE-2026-9816
Insufficient server-side validation of board member role fie -
CVE-2026-10080
Boards plugin panics on WebSocket command with non-string fi
Same vendor: Mattermost
-
CVE-2026-75587
Plaintext pre-auth secret exposure via Desktop App diagnosti -
CVE-2026-9693
Mattermost thread memberships persist after team removal, ex -
CVE-2026-9859
Mattermost Boards plugin didn’t enforce role-based authoriza -
CVE-2026-9816
Insufficient server-side validation of board member role fie -
CVE-2026-10080
Boards plugin panics on WebSocket command with non-string fi
Same weakness: CWE-863
V. Comments for CVE-2025-24920
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