# CVE-2025-53102

## Summary

- **CVE ID:** CVE-2025-53102
- **Severity:** HIGH
- **CVSS Score:** 8.2 (CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-384
- **Published:** Jul 29, 2025
- **Last Modified:** Mar 13, 2026

## 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.

## Affected Products

- discourse — discourse (>= 3.5.0.beta1, < 3.5.0.beta.8)
- discourse — discourse (< 3.4.7)

## References

- [CNA](https://github.com/discourse/discourse/security/advisories/GHSA-hv49-93h5-4wcv)
- [CNA](https://github.com/discourse/discourse/commit/20bf65099bb861a141bc10e8a4eab65329d91802)
- [CNA](https://github.com/discourse/discourse/commit/8bc0cee2c00a514ea60f33ea6172da2ce5a05beb)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.45%
- **EPSS Percentile:** 38.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._