CVE-2025-14273: Github.com/mattermost/mattermost/server/v8 Mattermost With Jira Plugin Enabled Vulnerability
HIGHCVE-2025-14273 is a HIGH (CVSS 7.2) mattermost with jira plugin enabled vulnerability (CWE-303: Incorrect Implementation of Authentication Algorithm) affecting Github.com/mattermost/mattermost/server/v8 libraries in the Go ecosystem. The issue involves mattermost with jira plugin enabled has incorrect implementation of authentication algorithm. Remediation is available by upgrading affected packages to version 8.0.0-20251121122154-b57c297c6d7a, 4.4.1.
CVE-2025-14273 at a Glance
Security Impact
CVSS: 7.2
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:L/A:L).
How to Fix CVE-2025-14273
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 8.0.0-20251121122154-b57c297c6d7aUpgrade github.com/mattermost/mattermost-plugin-jira to 4.4.1Run 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-2025-14273, 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 8.0.0-20251121122154-b57c297c6d7a), 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-303: Incorrect Implementation of Authentication Algorithm, where the requirements for the product dictate the use of an established authentication algorithm, but the implementation of the algorithm is incorrect. 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-2025-14273 Affected Github.com/mattermost/mattermost/server/v8 Versions
2 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/mattermost/mattermost/server/v8
|
Go |
< 8.0.0-20251121122154-b57c297c6d7a
|
8.0.0-20251121122154-b57c297c6d7a
|
|
github.com/mattermost/mattermost-plugin-jira
|
Go |
< 4.4.1
|
4.4.1
|
References
Frequently Asked Questions
What is CVE-2025-14273?
Which Github.com/mattermost/mattermost/server/v8 versions are affected?
What version fixes CVE-2025-14273?
Is github.com/mattermost/mattermost/server/v8 affected?
Is github.com/mattermost/mattermost-plugin-jira affected?
What is the CVSS score of CVE-2025-14273?
What CWE is associated with CVE-2025-14273?
How can I check Go dependencies for CVE-2025-14273?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-qvmc-92vg-6r35",
"modified" : "2026-01-02T15:34:07Z",
"published" : "2025-12-22T12:30:21Z",
"aliases" : [ "CVE-2025-14273" ],
"summary" : "Mattermost with Jira plugin enabled has Incorrect Implementation of Authentication Algorithm",
"details" : "Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 with the Jira plugin enabled and Mattermost Jira plugin versions <=4.4.0 fail to enforce authentication and issue-key path restrictions in the Jira plugin, which allows an unauthenticated attacker who knows a valid user ID to issue authenticated GET and POST requests to the Jira server via crafted plugin payloads that spoof the user ID and inject arbitrary issue key paths. Mattermost Advisory ID: MMSA-2025-00555",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost/server/v8"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "8.0.0-20251121122154-b57c297c6d7a"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost-plugin-jira"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "4.4.1"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-14273"
}, {
"type" : "WEB",
"url" : "https://github.com/mattermost/mattermost-plugin-jira/commit/bf9a1b7e81eb83304056b397c6abab3b062e14a2"
}, {
"type" : "WEB",
"url" : "https://github.com/mattermost/mattermost/commit/317025c411ec8c34381fdd4f137a17c63895a4f2"
}, {
"type" : "WEB",
"url" : "https://github.com/mattermost/mattermost/commit/463e0d0d3930782d3c975da26c991dcbfccd751c"
}, {
"type" : "WEB",
"url" : "https://github.com/mattermost/mattermost/commit/7c36acb68ce3c69defaea540623f794c84ecba93"
}, {
"type" : "WEB",
"url" : "https://github.com/mattermost/mattermost/commit/92b1e705225d97ce54d9f720f2e7aa66dc2a086b"
}, {
"type" : "WEB",
"url" : "https://github.com/mattermost/mattermost/commit/b57c297c6d7ae6812d85e32a625806ac9555deee"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/mattermost/mattermost"
}, {
"type" : "WEB",
"url" : "https://mattermost.com/security-updates"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-303" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2026-01-02T15:34:07Z",
"nvd_published_at" : "2025-12-22T12:16:19Z"
}
}