High severity7.5NVD Advisory· Published Jun 19, 2020· Updated Jun 17, 2026
CVE-2018-21258
CVE-2018-21258
Description
An issue was discovered in Mattermost Server before 5.1. It allows attackers to cause a denial of service via the invite_people slash command.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/mattermost/mattermost-serverGo | < 5.1.0 | 5.1.0 |
Affected products
4- Mattermost/Serverdescription
- ghsa-coords3 versionspkg:golang/github.com/mattermost/mattermost-serverpkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2015.6pkg:rpm/suse/govulncheck-vulndb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP6
< 5.1.0+ 2 more
- (no CPE)range: < 5.1.0
- (no CPE)range: < 0.0.20251209T172047-150000.1.127.1
- (no CPE)range: < 0.0.20251209T172047-150000.1.127.1
Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-5mh6-p63g-3mv5ghsaADVISORY
- mattermost.com/security-updates/nvdVendor Advisory
- nvd.nist.gov/vuln/detail/CVE-2018-21258ghsaADVISORY
- github.com/mattermost/mattermost/commit/af615ffc24b774d76deef8c93282831432669dd8ghsaWEB
- mattermost.com/security-updatesghsaWEB
News mentions
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