CVE-2025-48954highCWE-79

CVE-2025-48954: high-severity vulnerability in discourse

Discourse vulnerable to XSS via user-provided query parameter in oauth failure flow

Published

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36Vexday Risk Score

Patch soon. It has a working public exploit.

ssvc Attendcvss 8.1epss 0.7%
Discourse is an open-source discussion platform. Versions prior to 3.5.0.beta6 are vulnerable to cross-site scripting when the content security policy isn't enabled when using social logins. Version 3.5.0.beta6 patches the issue. As a workaround, have the content security policy enabled.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Affected products
discourse · discourse
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