An issue was discovered in Mattermost Plugins before 5.13.0.
Priority LOW 34Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
An issue was discovered in Mattermost Plugins before 5.13.0. The GitHub plugin allows an attacker to attach his Mattermost account to a different person's GitHub account.
Why it matters now
EPSS 0.00872 59th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mattermost:mattermost_plugins:*:*:*:*:*:*:*:* | before 5.13.0 | Vulnerable | Mattermost |
- cpe:2.3:a:mattermost:mattermost_plugins:*:*:*:*:*:*:*:* Versions before 5.13.0 Vulnerable ·Mattermost
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-20864
- 2026-10-03 Alias added: GHSA-jrx5-rpf5-27w3
References
Advisory 1
Sources
- CVE-2019-20864 · CVE Program
- CVE-2019-20864 · NVD
- FIRST EPSS
- GHSA-jrx5-rpf5-27w3 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences