CVE-2018-21256
- Source
- https://cve.org/CVERecord?id=CVE-2018-21256
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-21256.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2018-21256
- Published
- 2020-06-19T18:15:10.740Z
- Modified
- 2026-07-08T19:45:33.470187Z
- Severity
-
- 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
- Summary
- [none]
- Details
-
An issue was discovered in Mattermost Server before 5.1. It allows attackers to bypass intended access restrictions (for group-message channel creation) via the Group message slash command.
- References
Affected packages
Git / github.com/mattermost/mattermost
Affected ranges
- Type
- GIT
- Repo
- https://github.com/mattermost/mattermost
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
- Database specific
{ "source": "CPE_RANGE", "cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*", "extracted_events": [ { "introduced": "0" }, { "fixed": "5.1.0" } ] }