Discourse vulnerable to XSS via user-provided query paramete… (CVE-2025-48954)

Summary

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

Original description

The description as published by the source.

Discourse is an open-source discussion platform. Versions prior to 3.5.0 are vulnerable to cross-site scripting when the content security policy isn't enabled when using social logins. Version 3.5.0 patches the issue. As a workaround, have the content security policy enabled.

Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV

Affected packages

Bitnami discourse

[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.5.0"}]}]

References

advisory github.com
web nvd.nist.gov