CVE-2025-14273

Mattermost Jira plugin user spoofing enables Jira request forgery.

State: Published
Severity: 7.2 High
Published: Dec 22, 2025
Updated: Dec 22, 2025
Reserved: Dec 8, 2025

Description

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

Scores

CVSS	Score	Vector	Source
3.1	7.2 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L	Mattermost

Weaknesses

CWE-303 Incorrect Implementation of Authentication Algorithm

Affected Products

Product	Versions
MattermostMattermost	11.1.0 through 11.1.0Affected 11.0.0 through 11.0.5Affected 10.12.0 through 10.12.3Affected 10.11.0 through 10.11.7Affected 11.2.0Not affected 11.1.1Not affected 11.0.6Not affected 10.12.4Not affected 10.11.8Not affected

References

https://mattermost.com/security-updates

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