CVE-2024-39837: Github.com/mattermost/mattermost/server/v8 Mattermost Did Not Properly Restrict Vulnerability
LOWCVE-2024-39837 is a LOW (CVSS 3.8) mattermost did not properly restrict vulnerability (CWE-284: Improper Access Control) affecting Github.com/mattermost/mattermost/server/v8 libraries in the Go ecosystem. The issue involves mattermost did not properly restrict channel creation. Remediation is available by upgrading affected packages to version 9.5.7, 9.9.1, 8.0.0-20240626164322-c758cecaf30c, 5.3.2-0.20240626164322-c758cecaf30c, 6.0.0-20240626164322-c758cecaf30c.
CVE-2024-39837 at a Glance
Security Impact
CVSS: 3.8
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N).
How to Fix CVE-2024-39837
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 9.5.7Upgrade github.com/mattermost/mattermost/server/v8 to 9.9.1Upgrade github.com/mattermost/mattermost/server/v8 to 8.0.0-20240626164322-c758cecaf30cUpgrade github.com/mattermost/mattermost-server to 9.9.1Upgrade github.com/mattermost/mattermost-server/v5 to 5.3.2-0.20240626164322-c758cecaf30cUpgrade github.com/mattermost/mattermost-server/v6 to 6.0.0-20240626164322-c758cecaf30cUpgrade github.com/mattermost/mattermost-server to 9.5.7Run 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-2024-39837, 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 9.5.7), 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-284: Improper Access Control, where the product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. 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-2024-39837 Affected Github.com/mattermost/mattermost/server/v8 Versions
7 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/mattermost/mattermost/server/v8
|
Go |
≥ 9.5.0
< 9.5.7
|
9.5.7
|
|
github.com/mattermost/mattermost/server/v8
|
Go |
≥ 9.9.0
< 9.9.1
All 1 versions
9.9.0
|
9.9.1
|
|
github.com/mattermost/mattermost/server/v8
|
Go |
< 8.0.0-20240626164322-c758cecaf30c
|
8.0.0-20240626164322-c758cecaf30c
|
|
github.com/mattermost/mattermost-server
|
Go |
≥ 9.9.0
< 9.9.1
All 1 versions
9.9.0
|
9.9.1
|
|
github.com/mattermost/mattermost-server/v5
|
Go |
< 5.3.2-0.20240626164322-c758cecaf30c
|
5.3.2-0.20240626164322-c758cecaf30c
|
|
github.com/mattermost/mattermost-server/v6
|
Go |
< 6.0.0-20240626164322-c758cecaf30c
|
6.0.0-20240626164322-c758cecaf30c
|
|
github.com/mattermost/mattermost-server
|
Go |
≥ 9.5.0
< 9.5.7
|
9.5.7
|
References
Frequently Asked Questions
What is CVE-2024-39837?
Which Github.com/mattermost/mattermost/server/v8 versions are affected?
What version fixes CVE-2024-39837?
Is github.com/mattermost/mattermost/server/v8 affected?
Is github.com/mattermost/mattermost-server affected?
What is the CVSS score of CVE-2024-39837?
What CWE is associated with CVE-2024-39837?
How can I check Go dependencies for CVE-2024-39837?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-vvpg-55p7-5h8w",
"modified" : "2025-07-25T15:45:57Z",
"published" : "2024-08-01T15:32:23Z",
"aliases" : [ "CVE-2024-39837" ],
"summary" : "Mattermost did not properly restrict channel creation",
"details" : "Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6 fail to properly restrict channel creation which allows a malicious remote to create arbitrary channels, when shared channels were enabled.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost/server/v8"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "9.5.0"
}, {
"fixed" : "9.5.7"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost/server/v8"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "9.9.0"
}, {
"fixed" : "9.9.1"
} ]
} ],
"versions" : [ "9.9.0" ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost/server/v8"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "8.0.0-20240626164322-c758cecaf30c"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost-server"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "9.9.0"
}, {
"fixed" : "9.9.1"
} ]
} ],
"versions" : [ "9.9.0" ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost-server/v5"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "5.3.2-0.20240626164322-c758cecaf30c"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost-server/v6"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "6.0.0-20240626164322-c758cecaf30c"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost-server"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "9.5.0"
}, {
"fixed" : "9.5.7"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-39837"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/mattermost/mattermost"
}, {
"type" : "WEB",
"url" : "https://mattermost.com/security-updates"
}, {
"type" : "WEB",
"url" : "https://pkg.go.dev/vuln/GO-2024-3032"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-284" ],
"severity" : "LOW",
"github_reviewed" : true,
"github_reviewed_at" : "2024-08-02T13:29:46Z",
"nvd_published_at" : "2024-08-01T15:15:12Z"
}
}