GitHub Advisoryadvisory · Go

GHSA-x6mw-hf2j-vqpc Mattermost Server is vulnerable to channel invisibility DoS via misformatted post

MEDIUM Published 2022-05-24 Modified 2026-01-05 Official page ↗
Aliases
CVE-2017-18873
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-20
Reviewed
2026-01-05

Affected packages

• Go github.com/mattermost/mattermost-server: < 4.1.2-0.20171013141717-ee57a5829ab1 → fixed in 4.1.2-0.20171013141717-ee57a5829ab1 • Go github.com/mattermost/mattermost-server: >= 4.2.0, < 4.2.1-0.20171013140502-b3e4b0ac9168 → fixed in 4.2.1-0.20171013140502-b3e4b0ac9168 • Go github.com/mattermost/mattermost-server: >= 4.3.0-rc1, < 4.3.0 → fixed in 4.3.0

Description

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows attackers to cause a denial of service (channel invisibility) via a misformated post.

Related

Alias · CVE (1)

  • CVE-2017-18873 An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. vulnerability

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References