CVE-2018-21258
published 2020-06-19CVE-2018-21258: 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.
PriorityP432high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
1.16%
63.7th percentile
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.
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| github.com | mattermost_mattermost-server | >= 0 < 5.1.0 | 5.1.0 |
| github.com | mattermost_mattermost-server_v5 | >= 0 < 5.1.0 | 5.1.0 |
| mattermost | mattermost_server | < 5.1.0 | 5.1.0 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
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OSV
Mattermost Server is vulnerable to a Denial of Service attack through `invite_people` command in github.com/mattermost/mattermost-server
osv·2025-11-25
CVE-2018-21258 Mattermost Server is vulnerable to a Denial of Service attack through `invite_people` command in github.com/mattermost/mattermost-server
Mattermost Server is vulnerable to a Denial of Service attack through `invite_people` command in github.com/mattermost/mattermost-server
Mattermost Server is vulnerable to a Denial of Service attack through `invite_people` command in github.com/mattermost/mattermost-server
GHSA
Mattermost Server is vulnerable to a Denial of Service attack through `invite_people` command
ghsa·2022-05-24
CVE-2018-21258 [HIGH] CWE-400 Mattermost Server is vulnerable to a Denial of Service attack through `invite_people` command
Mattermost Server is vulnerable to a Denial of Service attack through `invite_people` command
An issue was discovered in Mattermost Server before 5.1.0. It allows attackers to cause a denial of service via the invite_people slash command.
OSV
Mattermost Server is vulnerable to a Denial of Service attack through `invite_people` command
osv·2022-05-24
CVE-2018-21258 [HIGH] Mattermost Server is vulnerable to a Denial of Service attack through `invite_people` command
Mattermost Server is vulnerable to a Denial of Service attack through `invite_people` command
An issue was discovered in Mattermost Server before 5.1.0. It allows attackers to cause a denial of service via the invite_people slash command.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2020-06-19
Published