CVE-2025-64641CWE-863broken-access-control

CVE-2025-64641

Medium · published December 24, 2025

CVSS v3.1
4.1
EPSS
0%
Percentile
6.6
In the wild
Unconfirmed
What it is

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 fail to verify that post actions invoking /share-issue-publicly were created by the Jira plugin which allowed a malicious Mattermost user to exfiltrate Jira tickets when victim users interacted with affected posts

The record
Technical detail
CVSS v3.1
4.1 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00175 · 6.6th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2025-12-24T13:15Z
Affected products (4)
ProductVersionsFixed in
mattermost/mattermost_server≥ 10.11.0, < 10.11.810.11.8
mattermost/mattermost_server≥ 10.12.0, < 10.12.410.12.4
mattermost/mattermost_server≥ 11.0.0, < 11.0.611.0.6
mattermost/mattermost_server≥ 11.1.0, < 11.1.111.1.1
References (1)
https://mattermost.com/security-updates · [email protected]
EPSS history
Timeline
  • 24 DEC 08:02Z
    Mattermost Jira plugin crafted action leaks Jira issue details
    cvelistv5