Inadequate Encryption Strength Affecting joserfc package, versions [,1.6.8)
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- published3 Jul 2026
- disclosed2 Jul 2026
- credittonghuaroot
Introduced: 2 Jul 2026
NewCVE-2026-49852 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade joserfc to version 1.6.8 or higher.
Overview
Affected versions of this package are vulnerable to Inadequate Encryption Strength in the verify process. An attacker can gain unauthorized access and forge arbitrary claims by submitting tokens signed with an empty or null key, which are incorrectly accepted as valid signatures. This is only exploitable if the verification key is set to an empty string or None, such as when a secret is missing from configuration or environment variables.