Improper Validation of Integrity Check Value Affecting airflow-2-compat package, versions <2.11.2-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.01% (2nd percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-AIRFLOW2COMPAT-15691096
  • published19 Mar 2026
  • disclosed16 Mar 2026

Introduced: 16 Mar 2026

NewCVE-2026-28498  (opens in a new tab)
CWE-354  (opens in a new tab)
CWE-573  (opens in a new tab)

How to fix?

Upgrade Minimos:latest airflow-2-compat to version 2.11.2-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream airflow-2-compat package and not the airflow-2-compat package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.9, a library-level vulnerability was identified in the Authlib Python library concerning the validation of OpenID Connect (OIDC) ID Tokens. Specifically, the internal hash verification logic (_verify_hash) responsible for validating the at_hash (Access Token Hash) and c_hash (Authorization Code Hash) claims exhibits a fail-open behavior when encountering an unsupported or unknown cryptographic algorithm. This flaw allows an attacker to bypass mandatory integrity protections by supplying a forged ID Token with a deliberately unrecognized alg header parameter. The library intercepts the unsupported state and silently returns True (validation passed), inherently violating fundamental cryptographic design principles and direct OIDC specifications. This issue has been patched in version 1.6.9.

CVSS Base Scores

version 3.1