CVE-2025-53102 — Discourse's WebAuthn challenge isn't cleared from user session after authentication
Discourse is an open-source community discussion platform. Prior to version 3.4.7 on the `stable` branch and version 3.5.0.beta.8 on the `tests-passed` branch, upon issuing a ph…
Published: 2025-07-29 · CVSS: 8.2 · CVSS 4.0
Discourse is an open-source community discussion platform. Prior to version 3.4.7 on the `stable` branch and version 3.5.0.beta.8 on the `tests-passed` branch, upon issuing a physical security key for 2FA, the server generates a WebAuthn challenge, which the client signs. The challenge is not cleared from the user’s session after authentication, potentially allowing reuse and increasing security risk. This is fixed in versions 3.4.7 and 3.5.0.beta.8.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7