CVE-2025-64641Mattermost Jira plugin crafted action leaks Jira issue details
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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
- CVSS
- 4.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N
- Weakness (CWE)
- CWE-863
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Mattermost
- NVD analysis
- Analyzed
- Record last updated
- Dec 24, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Mattermost Mattermost mattermost:mattermost (from the name) | from 11.1.0 through 11.1.0; from 11.0.0 through 11.0.5; from 10.12.0 through 10.12.3; from 10.11.0 through 10.11.7; 11.2.0 not affected; 11.1.1 not affected; 11.0.6 not affected; 10.12.4 not affected; and 1 more ranges | CNA record |
mattermost mattermost_server mattermost:mattermost_server | from 10.11.0 before 10.11.8; from 10.12.0 before 10.12.4; from 11.0.0 before 11.0.6; from 11.1.0 before 11.1.1 | NVD |
References
- https://mattermost.com/security-updatesvendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.