CVE-2025-31947: Github.com/mattermost/mattermost/server/v8 Mattermost Fails To Lockout LDAP Vulnerability
MODERATECVE-2025-31947 is a MODERATE (CVSS 5.8) mattermost fails to lockout ldap vulnerability (CWE-645: Overly Restrictive Account Lockout Mechanism) affecting Github.com/mattermost/mattermost/server/v8 libraries in the Go ecosystem. The issue involves mattermost fails to lockout ldap users after repeated login failures. Remediation is available by upgrading affected packages to version 10.6.2, 10.5.3, 10.4.5, 9.11.12, 8.0.0-20250415054241-76ab3867b785.
CVE-2025-31947 at a Glance
Security Impact
CVSS: 5.8
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L).
How to Fix CVE-2025-31947
To remediate this vulnerability, upgrade all affected Github.com/mattermost/mattermost/server/v8 dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade github.com/mattermost/mattermost/server/v8 to 10.6.2Upgrade github.com/mattermost/mattermost/server/v8 to 10.5.3Upgrade github.com/mattermost/mattermost/server/v8 to 10.4.5Upgrade github.com/mattermost/mattermost/server/v8 to 9.11.12Upgrade github.com/mattermost/mattermost/server/v8 to 8.0.0-20250415054241-76ab3867b785Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for github.com/mattermost/mattermost/server/v8How to Check if You Are Affected
To determine whether your application is affected by CVE-2025-31947, inspect your project dependencies for Github.com/mattermost/mattermost/server/v8:
inspect dependencies for github.com/mattermost/mattermost/server/v8Analyze the terminal output to locate any version of Github.com/mattermost/mattermost/server/v8 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 10.6.2), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-645: Overly Restrictive Account Lockout Mechanism, where the product contains an account lockout protection mechanism, but the mechanism is too restrictive and can be triggered too easily, which allows attackers to deny service to legitimate users by causing their accounts to be locked out. In Github.com/mattermost/mattermost/server/v8, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2025-31947 Affected Github.com/mattermost/mattermost/server/v8 Versions
5 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/mattermost/mattermost/server/v8
|
Go |
≥ 10.6.0
< 10.6.2
|
10.6.2
|
|
github.com/mattermost/mattermost/server/v8
|
Go |
≥ 10.5.0
< 10.5.3
|
10.5.3
|
|
github.com/mattermost/mattermost/server/v8
|
Go |
≥ 10.4.0
< 10.4.5
|
10.4.5
|
|
github.com/mattermost/mattermost/server/v8
|
Go |
≥ 9.11.0
< 9.11.12
|
9.11.12
|
|
github.com/mattermost/mattermost/server/v8
|
Go |
< 8.0.0-20250415054241-76ab3867b785
|
8.0.0-20250415054241-76ab3867b785
|
References
Frequently Asked Questions
What is CVE-2025-31947?
Which Github.com/mattermost/mattermost/server/v8 versions are affected?
What version fixes CVE-2025-31947?
Is github.com/mattermost/mattermost/server/v8 affected?
What is the CVSS score of CVE-2025-31947?
What CWE is associated with CVE-2025-31947?
How can I check Go dependencies for CVE-2025-31947?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-qgwx-rffp-6cx9",
"modified" : "2025-05-17T14:01:55Z",
"published" : "2025-05-15T12:30:26Z",
"aliases" : [ "CVE-2025-31947" ],
"summary" : "Mattermost Fails to Lockout LDAP Users After Repeated Login Failures",
"details" : "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.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost/server/v8"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "10.6.0"
}, {
"fixed" : "10.6.2"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 10.6.1"
}
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost/server/v8"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "10.5.0"
}, {
"fixed" : "10.5.3"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 10.5.2"
}
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost/server/v8"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "10.4.0"
}, {
"fixed" : "10.4.5"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 10.4.4"
}
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost/server/v8"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "9.11.0"
}, {
"fixed" : "9.11.12"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 9.11.11"
}
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost/server/v8"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "8.0.0-20250415054241-76ab3867b785"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-31947"
}, {
"type" : "WEB",
"url" : "https://github.com/mattermost/mattermost/pull/30821"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/mattermost/mattermost"
}, {
"type" : "WEB",
"url" : "https://mattermost.com/security-updates"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-645" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2025-05-17T14:01:54Z",
"nvd_published_at" : "2025-05-15T11:15:48Z"
}
}