CVE-2025-14273 — Incorrect Implementation of Authentication Algorithm in Mattermost Mattermost-plugin-jira
Severity
8.3HIGHNVD
CNA7.2
EPSS
0.1%
top 68.83%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedDec 22
Latest updateJan 12
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-…
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:LExploitability: 3.9 | Impact: 3.7
Affected Packages4 packages
🔴Vulnerability Details
4OSV▶
Mattermost with Jira plugin enabled has Incorrect Implementation of Authentication Algorithm in github.com/mattermost/mattermost-plugin-jira↗2026-01-12
OSV▶
Mattermost with Jira plugin enabled has Incorrect Implementation of Authentication Algorithm↗2025-12-22
GHSA▶
Mattermost with Jira plugin enabled has Incorrect Implementation of Authentication Algorithm↗2025-12-22