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CVE-2017-18892 Moderate

Mattermost Server does not neutralize HTML content in an Email template field in github.com/mattermost/mattermost-server

Mattermost Server does not neutralize HTML content in an Email template field in github.com/mattermost/mattermost-server

Exploit probability 0.7%
Published January 23, 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-2017-18892

An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. E-mail templates can have a field in which HTML content is not neutralized.

View original source
Open Source Vulnerabilities GO-2026-4317

Mattermost Server does not neutralize HTML content in an Email template field in github.com/mattermost/mattermost-server

View original source
Open Source Vulnerabilities GHSA-wj5w-qghh-gvqp

An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. E-mail templates can have a field in which HTML content is not neutralized.

View original source

05 / REFERENCES

Further evidence