CVE-2024-24988— Excessive resource consumption when sending long emoji names in user custom status
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I. Basic Information for CVE-2024-24988
Vulnerability Information
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Vulnerability Title
Excessive resource consumption when sending long emoji names in user custom status
Source: NVD (National Vulnerability Database)
Vulnerability Description
Mattermost fails to properly validate the length of the emoji value in the custom user status, allowing an attacker to send multiple times a very long string as an emoji value causing high resource consumption and possibly crashing the server.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: NVD (National Vulnerability Database)
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，该漏洞源于无法正确验证自定义用户状态中表情符号值的长度，导致攻击者能够发送长字符串造成服务器拒绝服务（DOS）。受影响的产品和版本：Mattermost 9.3.1之前的9.3.0版本，9.2.5之前的9.2.0版本，8.1.9之前版本。
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 ~ 9.2.4 | - |
II. Public POCs for CVE-2024-24988
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Mattermost · 2024-02-29 · 9 CVEs total
| CVE-2024-23493 | 4.3 MEDIUM | Team associated AD/LDAP Groups Leaked due to missing authorization |
| CVE-2024-1887 | 4.3 MEDIUM | Public channel post content accessible without membership when compliance export is enable |
| CVE-2024-1888 | 4.3 MEDIUM | Existing server guests invited to the team by members without "invite_guest" permission |
| CVE-2024-1942 | 4.3 MEDIUM | Mattermost 安全漏洞 |
| CVE-2024-1953 | 4.3 MEDIUM | Mattermost 安全漏洞 |
| CVE-2024-23488 | 3.1 LOW | Files of archived channels accessible with the “Allow users to view archived channels” opt |
| CVE-2024-1952 | 3.1 LOW | Mattermost 安全漏洞 |
| CVE-2024-1949 | 2.6 LOW | Mattermost 安全漏洞 |
IV. Related Vulnerabilities
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Unbounded Request Body Read in MS Teams Plugin {{/changes}} - CVE-2026-21388
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Same vendor: Mattermost
- CVE-2026-3590
Race Condition in Guest Magic Link Authentication Allows Tok - CVE-2026-28741
CSRF Protection Bypass Allows Updating a User's Authenticati - CVE-2026-27769
Connected Workspaces: Malicious remote server can manipulate - CVE-2026-24661
Unbounded Request Body Read in MS Teams Plugin {{/changes}} - CVE-2026-21388
Unbounded Request Body Read in MS Teams Plugin {{/lifecycle}
Same weakness: CWE-400
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V. Comments for CVE-2024-24988
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