CVE-2018-0114: Cisco Node-Jose

High severity, CVSS 7.5. EPSS: 42.7% chance of exploitation in the next 30 days.

A vulnerability in the Cisco node-jose open source library before 0.11.0 could allow an unauthenticated, remote attacker to re-sign tokens using a key that is embedded within the token. The vulnerability is due to node-jose following the JSON Web Signature (JWS) standard for JSON Web Tokens (JWTs). This standard specifies that a JSON Web Key (JWK) representing a public key can be embedded within the header of a JWS. This public key is then trusted for verification. An attacker could exploit this by forging valid JWS objects by removing the original signature, adding a new public key to the header, and then signing the object using the (attacker-owned) private key associated with the public key embedded in that JWS header.

Affected products

• Cisco Node-Jose: before 0.11.0 (fixed in 0.11.0)

Published 2018-01-04. Last modified 2026-06-17.