CVE-2019-20859 json
An issue was discovered in Mattermost Server before 5.15.0.
published 2020-06-19 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-11396
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 67%
- public exploits
- 0
- none known
Summary
An issue was discovered in Mattermost Server before 5.15.0. Login access control can be bypassed via crafted input.
Patch / fix
- mattermost mattermost_server 4.10.8, 5.7.3, 5.8.1
Exploit prediction
1.17% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
References
-
mattermost.com
/security-updates/
vendor-advisory
Sources
- CVE List CVE-2019-20859
- NVD CVE-2019-20859
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.