Mattermost fails to use  innerText / textContent when setting the channel name in the webapp during autocomplete, allowing an attacker to inject HTML to a victim's page by create a channel name that is valid HTML. No XSS is possible though. 

Fixes

Solution

Update Mattermost Server to versions 7.8.13, 8.1.4 or higher.


Workaround

No workaround given by the vendor.

References
History

Tue, 03 Jun 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Mattermost

Published:

Updated: 2025-06-03T14:01:04.187Z

Reserved: 2023-11-20T12:06:31.656Z

Link: CVE-2023-35075

cve-icon Vulnrichment

Updated: 2024-08-02T16:23:58.680Z

cve-icon NVD

Status : Modified

Published: 2023-11-27T10:15:07.257

Modified: 2024-11-21T08:07:55.753

Link: CVE-2023-35075

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.