SB2026011925 - Improper verification of cryptographic signature in node-jws
Published: January 19, 2026
Security Bulletin ID
SB2026011925
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper verification of cryptographic signature (CVE-ID: CVE-2025-65945)
The vulnerability allows a remote attacker to bypass authorization checks.
The vulnerability exists due to improper signature verification under specific conditions when using the HS256 algorithm within the jws.createVerify() function. A remote attacker can manipulate header or payload in the HMAC secret lookup routines and bypass authorization checks.
Remediation
Install update from vendor's website.