GitHub Advisoryadvisory · Go

GHSA-9589-mq83-f749 Mattermost Server is vulnerable to DoS through maliciously crafted posts

MEDIUM Published 2022-05-24 Modified 2026-01-12 Official page ↗
Aliases
CVE-2017-18898
Ecosystem
Go
Packages
github.com/mattermost/mattermost-server
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
CWE-404
Reviewed
2026-01-12

Affected packages

• Go github.com/mattermost/mattermost-server: < 4.0.5 → fixed in 4.0.5 • Go github.com/mattermost/mattermost-server: >= 4.1.0, < 4.1.1 → fixed in 4.1.1 • Go github.com/mattermost/mattermost-server: >= 4.2.0-rc1, < 4.2.0 → fixed in 4.2.0

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.

Related

Alias · CVE (1)

  • CVE-2017-18898 An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. vulnerability

Weakness · CWE (1)

  • CWE-404 Improper Resource Shutdown or Release weakness

References