CVE-2017-18893
Moderate
Mattermost Server is vulnerable to XSS through display name field in github.com/mattermost/mattermost-server
Mattermost Server is vulnerable to XSS through display name field in github.com/mattermost/mattermost-server
Exploit probability
0.7%
Published
January 13, 2026
Required by
Not available
Last source change
March 3, 2026
02 / AFFECTED SOFTWARE
Affected packages
17 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2017-18893
View original source
An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. Display names allow XSS.
Open Source Vulnerabilities
GO-2026-4296
View original source
Mattermost Server is vulnerable to XSS through display name field in github.com/mattermost/mattermost-server
Open Source Vulnerabilities
GHSA-887v-xh2x-47cm
View original source
An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. Display names allow XSS.
05 / REFERENCES
Further evidence
- https://mattermost.com/security-updates/
- https://github.com/advisories/GHSA-887v-xh2x-47cm
- https://github.com/mattermost/mattermost/commit/2a4d88d07c5815deac103e109550d25338507151
- https://github.com/mattermost/mattermost/commit/670bfbf62686ebe9f2ab332733d851a62b6950b0
- https://github.com/mattermost/mattermost/commit/d0b42b9e527e93a61fd06a9b9106fc97067807e4
- https://mattermost.com/security-updates
- https://nvd.nist.gov/vuln/detail/CVE-2017-18893
- https://github.com/mattermost/mattermost