CVE-2022-27240: Glewlwyd SSO Server Project Glewlwyd SSO Server

Critical severity, CVSS 9.8. EPSS: 1.6% chance of exploitation in the next 30 days.

scheme/webauthn.c in Glewlwyd SSO server 2.x before 2.6.2 has a buffer overflow associated with a webauthn assertion.

Affected products

• Glewlwyd SSO Server Project Glewlwyd SSO Server: from 2.0.0, before 2.6.2 (fixed in 2.6.2)

Published 2022-03-18. Last modified 2026-06-17.