CVE-2025-53102
Critical
Description
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.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Discourse
PublishedJul 29, 2025
First seenJul 29, 2025
Weakness typeCWE-384CWE-384
How to fix
Update
- discourse discourse3.4.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| discourse discourse | v < 3.4.6, v ≤ 3.5.0, 3.5.0 | 3.4.6 |
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