CVE-2025-31947— Repeated LDAP login failures can lock an LDAP account
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 10.6.1及之前的10.6.x版本、10.5.2及之前的10.5.x版本、10.4.4及之前的10.4.x版本和9.11.11及之前的9.11.x版本存在安全漏洞，该漏洞源于未能锁定LDAP用户，可能导致攻击者通过重复登录失败锁定外部LDAP账户。
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I. Basic Information for CVE-2025-31947
Vulnerability Information
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Vulnerability Title
Repeated LDAP login failures can lock an LDAP account
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost versions 10.6.x <= 10.6.1, 10.5.x <= 10.5.2, 10.4.x <= 10.4.4, 9.11.x <= 9.11.11 fail to lockout LDAP users following repeated login failures, which allows attackers to lock external LDAP accounts through repeated login failures through Mattermost.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
过度限制的账户封锁机制
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 10.6.1及之前的10.6.x版本、10.5.2及之前的10.5.x版本、10.4.4及之前的10.4.x版本和9.11.11及之前的9.11.x版本存在安全漏洞，该漏洞源于未能锁定LDAP用户，可能导致攻击者通过重复登录失败锁定外部LDAP账户。
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 | 10.6.0 ~ 10.6.1 | - |
|
II. Public POCs for CVE-2025-31947
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Same Patch Batch · Mattermost · 2025-05-15 · 4 CVEs total
| CVE-2025-2527 | 4.3 MEDIUM | Improper access control to group information |
| CVE-2025-3446 | 4.3 MEDIUM | Members Without Guest Invite Permissions Can Add Guests to Teams |
| CVE-2025-2570 | 2.7 LOW | System Admin Cannot Access Environment settings in System Console While System Manager Can |
IV. Related Vulnerabilities
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CVE-2026-96260
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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-645
V. Comments for CVE-2025-31947
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