By weakness (CWE)

CWE-460: related vulnerabilities

CVEs classified under CWE-460. Understanding the weakness class helps prioritize systemic fixes over one-off patches.

1 published vulnerability

• CVE-2026-48524LOW 3.7

  PyJWT, a widely-used Python library for handling JSON Web Tokens (JWTs), contains a weakness in how it fetches public signing keys. When a JWT arrives with an unfamiliar key identifier (kid), the library will make a fresh HTTP request to retrieve the correct signing key—without any protection against repeated requests for the same unknown identifier. An attacker can exploit this by sending JWTs with different fake kid values, forcing the library to make outbound requests for each one. While the actual impact depends on whether the signing-key endpoint has its own rate limiting or becomes saturated, the vulnerability allows an attacker to potentially cause a denial-of-service condition through request amplification. This issue is resolved in PyJWT 2.13.0 and later.