Lucene search
+L

GHSA-7WC2-QXGW-G8GG Authlib: Setting `alg: none` and a blank signature appears to bypass signature verification

🗓️ 04 Mar 2026 20:55:47Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 2 Views

Authlib vulnerability allows tokens with alg none and empty signature to bypass verification after upgrading to version 1.6.

Related
Refs

Data

Build on a solid foundation with Vulners data

We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data

Api

Power your application with Vulners API

The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access

App

Assess and manage vulnerabilities with Vulners tools

Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation

13 Jul 2026 07:26Current
5.9Medium risk
Vulners AI Score5.9
CVSS 48.7
EPSS0.00425
2