CVE-2017-18898
MEDIUM5.3EPSS 0.38%Mattermost Server is vulnerable to DoS through maliciously crafted posts
Published: 5/24/2022Modified: 2/3/2026
Description
An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. It allows crafted posts that potentially cause a web browser to hang.
Affected packages (2)
- Go/github.com/mattermost/mattermost-serverfrom 0, < 4.0.5
- Go/github.com/mattermost/mattermost-serverfrom 0, < 4.0.5+incompatible, >= 4.1.0+incompatible, < 4.1.1+incompatible, >= 4.2.0-rc1+incompatible, < 4.2.0+incompatible
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
References (7)
- ADVISORYhttps://github.com/advisories/GHSA-9589-mq83-f749
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2017-18898
- PATCHhttps://github.com/mattermost/mattermost
- WEBhttps://github.com/grundleborg/mattermost/commit/5286318c72aa230f33f89df3b4cbdc33a0822a93
- WEBhttps://github.com/mattermost/mattermost/commit/5bf6f06c02c368b9c73a8be2d2d8795b3405b22b
- WEBhttps://github.com/mattermost/mattermost/commit/5c22176c963a7393241872073547f30083efe218
- WEBhttps://mattermost.com/security-updates