What is GHSA-j5rm-v3vh-vx94?

GHSA-j5rm-v3vh-vx94 is a security advisory published by GitHub Security Advisories with High severity. eduMFA Passkeys: missing expiration flag may allow replay attacks and reuse of old challenges

Why does GHSA-j5rm-v3vh-vx94 have no CVE ID yet?

GitHub Security Advisories published this advisory directly to customers before NVD assigned a CVE ID. This is the embargo-window disclosure pattern — vendors notify customers on day 0; NVD's public record follows days to weeks later.

Which products are affected by GHSA-j5rm-v3vh-vx94?

GHSA-j5rm-v3vh-vx94 affects 1 product, including: pip/edumfa:\u003c 2.9.1.

GHSA-j5rm-v3vh-vx94HighDisclosed before NVD

eduMFA Passkeys: missing expiration flag may allow replay attacks and reuse of old challenges

Vendor

GitHub Security Advisories

Published

May 18, 2026

Last Modified

May 18, 2026

📋 Description

Impact

In eduMFA < 2.9.1 userless Passkey/WebAuthn challenges might be replayed and do not expire

Patches

Fixed in eduMFA >= 2.9.1 by adding validity information to the userless challenges.

Workarounds

No known workarounds besides disabling userless login altogether.

🎯 Affected products1

pip/edumfa:< 2.9.1

🔗 References (2)

https://github.com/eduMFA/eduMFA/security/advisories/GHSA-j5rm-v3vh-vx94
https://github.com/advisories/GHSA-j5rm-v3vh-vx94