CVE-2024-24776— Incorrect Authorization leads to Channel Member Count Leak
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，该漏洞源于无法检查 POST /api/v4/channels/stats/member_count API 中所需的权限，导致信息泄露。
Possible ATT&CK Techniques 1 AI
T1530 · Data from Cloud Storage
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2024-24776
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Incorrect Authorization leads to Channel Member Count Leak
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost fails to check the required permissions in the POST /api/v4/channels/stats/member_count API resulting in channel member counts being leaked to a user without permissions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
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，该漏洞源于无法检查 POST /api/v4/channels/stats/member_count API 中所需的权限，导致信息泄露。
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 | 0 ~ 8.1.7 | - |
|
II. Public POCs for CVE-2024-24776
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2024-24776
请登录查看更多情报信息。
Same Patch Batch · Mattermost · 2024-02-09 · 4 CVEs total
| CVE-2024-1402 | 4.3 MEDIUM | Denial of service in mattermost mobile apps and server via emoji reactions |
| CVE-2024-23319 | 3.5 LOW | CSRF issue allows disconnecting a user's Jira connection through a simple post message (Ji |
| CVE-2024-24774 | 3.4 LOW | Missing authorization allows users to access arbitrary security levels on Jira through web |
IV. Related Vulnerabilities
Same product: Mattermost
-
CVE-2026-96260
Mattermost server missing request body size limit on plugin -
CVE-2026-96259
Mattermost server-side request forgery via OAuth endpoints c -
CVE-2026-95666
Unbounded post ID array in the bulk reactions endpoint allow -
CVE-2026-12284
Mattermost Desktop App Missing IPC Sender Validation in Call -
CVE-2026-75588
Mattermost Desktop App plugin popout scheme validation bypas
Same vendor: Mattermost
-
CVE-2026-96260
Mattermost server missing request body size limit on plugin -
CVE-2026-96259
Mattermost server-side request forgery via OAuth endpoints c -
CVE-2026-95666
Unbounded post ID array in the bulk reactions endpoint allow -
CVE-2026-12284
Mattermost Desktop App Missing IPC Sender Validation in Call -
CVE-2026-75588
Mattermost Desktop App plugin popout scheme validation bypas
Same weakness: CWE-284
-
CVE-2026-105823
ImageMagick before 7.1.2-31 Policy Bypass in CUT Encoder -
CVE-2026-76281
Improper Access Control in Splunk Enterprise -
CVE-2026-76265
Improper Access Control through REST API Endpoints in Splunk -
CVE-2026-76463
Cisco Meraki Security Hardening Release: October 2026 - Impr -
CVE-2026-76498
Cisco Application Policy Infrastructure Controller Hardening
V. Comments for CVE-2024-24776
No comments yet