CVE-2020-14459 json
An issue was discovered in Mattermost Server before 5.19.0.
published 2020-06-19 6 y ago modified 2026-06-17 4 mo ago also BIT-mattermost-2020-14459 , EUVD-2020-6596
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
An issue was discovered in Mattermost Server before 5.19.0. Attackers can rename a channel and cause a collision with a direct message, aka MMSA-2020-0002.
Patch / fix
- bitnami mattermost 5.19.0
- mattermost mattermost_server 5.19.0
Exploit prediction
0.94% chance of exploitation in the next 30 days, higher than 61% 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:N/I:H/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
| OSV | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | mattermost | <5.19.0 |
5.19.0 |
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
mattermost.com
/security-updates/
vendor-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2020-14459
web
Sources
- CVE List CVE-2020-14459
- NVD CVE-2020-14459
- OSV BIT-mattermost-2020-14459
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