CVE-2024-31859— Member promoted to channel admin via playbooks run linking to channel
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I. Basic Information for CVE-2024-31859
Vulnerability Information
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Vulnerability Title
Member promoted to channel admin via playbooks run linking to channel
Source: NVD (National Vulnerability Database)
Vulnerability Description
Mattermost versions 9.5.x <= 9.5.3, 9.6.x <= 9.6.1 and 8.1.x <= 8.1.12 fail to perform proper authorization checks which allows a member running a playbook in an existing channel to be promoted to a channel admin
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
访问控制不恰当
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，该漏洞源于无法执行正确的授权检查，允许将在现有频道中运行的成员提升为管理员。
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 | 9.5.0 ~ 9.5.3 | - |
II. Public POCs for CVE-2024-31859
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Mattermost · 2024-05-26 · 9 CVEs total
| CVE-2024-32045 | 5.9 MEDIUM | Playbook run link to private channel grants channel access |
| CVE-2024-36255 | 5.7 MEDIUM | Post actions can run playbook checklist task commands |
| CVE-2024-29215 | 4.3 MEDIUM | Slash commands run in channel without channel membership via playbook task commands |
| CVE-2024-5270 | 4.3 MEDIUM | SAML to email switch possible when email signin is disabled |
| CVE-2024-5272 | 4.3 MEDIUM | Run Details leak to guest via webhook event "custom_playbooks_playbook_run_updated" |
| CVE-2024-34152 | 4.3 MEDIUM | Playbook Run Metadata leak to Guest |
| CVE-2024-34029 | 4.3 MEDIUM | AD/LDAP Group Members Leak |
| CVE-2024-36241 | 3.1 LOW | /playbook add slash command allows viewing arbitrary post contents |
IV. Related Vulnerabilities
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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-284
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V. Comments for CVE-2024-31859
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