Vulnerability in pac4j OpenID Connect Provider Allows Token Validation Bypass
CVE-2021-44878

7.5HIGH

Key Information:

Vendor: Pac4j
Status: Pac4j
Vendor: CVE Published:; 6 January 2022

What is CVE-2021-44878?

This vulnerability occurs when an OpenID Connect provider allows the use of the 'none' algorithm, leading to potential bypass of token validation. Specifically, in pac4j versions 5.3.0 and earlier, the library does not enforce the rejection of tokens that use the 'none' algorithm unless configured explicitly. This lack of proper validation can enable an attacker to exploit the system by injecting crafted ID tokens with the 'none' algorithm, which violates the OpenID Core Specification. The attack could compromise the integrity of the authentication process, allowing unauthorized access to the system.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch