FlawAtlas
Search the atlas
CVE-2017-18898 Moderate

Mattermost Server is vulnerable to DoS through maliciously crafted posts in github.com/mattermost/mattermost-server

Mattermost Server is vulnerable to DoS through maliciously crafted posts in github.com/mattermost/mattermost-server

Exploit probability 1.1%
Published January 13, 2026
Required by Not available
Last source change March 3, 2026

02 / AFFECTED SOFTWARE

Affected packages

Unknown Unknown

17 explicit affected versions

Go github.com/mattermost/mattermost-server
Go github.com/mattermost/mattermost-server

03 / CONNECTIONS

Connected vulnerabilities

related OPENSUSE-SU-2026:21483-1

04 / EVIDENCE

Source records

Open Source Vulnerabilities CVE-2017-18898

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.

View original source
Open Source Vulnerabilities GO-2026-4300

Mattermost Server is vulnerable to DoS through maliciously crafted posts in github.com/mattermost/mattermost-server

View original source
Open Source Vulnerabilities GHSA-9589-mq83-f749

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.

View original source

05 / REFERENCES

Further evidence