What’s Vulnerable › Vulnerabilities
CVE-2023-35075: HTML injection via channel autocomplete
- Severity: medium (CVSS 5.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2023-11-27 · updated 2026-06-17
- Weakness: CWE-74
Description
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.
Affected products
- Mattermost App Framework: through 7.8.12; from 8.0.0 through 8.1.3
References
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