CVE-2025-31363: Github.com/mattermost/mattermost/server/v8 Mattermost Doesn't Restrict Domains LLM Vulnerability
LOWCVE-2025-31363 is a LOW (CVSS 3.0) mattermost doesn't restrict domains llm vulnerability (CWE-201: Insertion of Sensitive Information Into Sent Data) affecting Github.com/mattermost/mattermost/server/v8 libraries in the Go ecosystem. The issue involves mattermost doesn't restrict domains llm can request to contact upstream. Remediation is available by upgrading affected packages to version 10.5.1, 10.4.3, 9.11.10, 8.0.0-20250218121836-2b5275d87136.
CVE-2025-31363 at a Glance
Security Impact
CVSS: 3.0
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N).
How to Fix CVE-2025-31363
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 10.5.1Upgrade github.com/mattermost/mattermost/server/v8 to 10.4.3Upgrade github.com/mattermost/mattermost/server/v8 to 9.11.10Upgrade github.com/mattermost/mattermost/server/v8 to 8.0.0-20250218121836-2b5275d87136Run 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-2025-31363, 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 10.5.1), 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-201: Insertion of Sensitive Information Into Sent Data, where the code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that 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-2025-31363 Affected Github.com/mattermost/mattermost/server/v8 Versions
4 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/mattermost/mattermost/server/v8
|
Go |
≥ 10.5.0
< 10.5.1
|
10.5.1
|
|
github.com/mattermost/mattermost/server/v8
|
Go |
≥ 10.4.0
< 10.4.3
|
10.4.3
|
|
github.com/mattermost/mattermost/server/v8
|
Go |
≥ 9.11.0
< 9.11.10
|
9.11.10
|
|
github.com/mattermost/mattermost/server/v8
|
Go |
< 8.0.0-20250218121836-2b5275d87136
|
8.0.0-20250218121836-2b5275d87136
|
References
Frequently Asked Questions
What is CVE-2025-31363?
Which Github.com/mattermost/mattermost/server/v8 versions are affected?
What version fixes CVE-2025-31363?
Is github.com/mattermost/mattermost/server/v8 affected?
What is the CVSS score of CVE-2025-31363?
What CWE is associated with CVE-2025-31363?
How can I check Go dependencies for CVE-2025-31363?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-9h6j-4ffx-cm84",
"modified" : "2025-04-23T15:19:55Z",
"published" : "2025-04-16T12:31:19Z",
"aliases" : [ "CVE-2025-31363" ],
"summary" : "Mattermost doesn't restrict domains LLM can request to contact upstream",
"details" : "Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.9 fail to restrict domains the LLM can request to contact upstream which allows an authenticated user to exfiltrate data from an arbitrary server accessible to the victim via performing a prompt injection in the AI plugin's Jira tool.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost/server/v8"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "10.5.0"
}, {
"fixed" : "10.5.1"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost/server/v8"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "10.4.0"
}, {
"fixed" : "10.4.3"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost/server/v8"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "9.11.0"
}, {
"fixed" : "9.11.10"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost/server/v8"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "8.0.0-20250218121836-2b5275d87136"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-31363"
}, {
"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-2025-3622"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-201", "CWE-497" ],
"severity" : "LOW",
"github_reviewed" : true,
"github_reviewed_at" : "2025-04-16T15:15:47Z",
"nvd_published_at" : "2025-04-16T10:15:15Z"
}
}