Is CVE-2026-48524 actively exploited?

No active exploitation of CVE-2026-48524 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-48524 be exploited remotely?

Yes. CVE-2026-48524 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-48524?

CVE-2026-48524 has a CVSS score of 3.7 (LOW).

HOME VULNERABILITIESCVE-2026-48524

LOW

CVE-2026-48524

CWE-460Published: May 28, 2026· Updated: Jun 1, 2026

3.7

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:12.0th

Official Description

PyJWT is a JSON Web Token implementation in Python. Prior to 2.13.0, PyJWKClient.get_signing_key() forces a fresh HTTP request to the JWKS endpoint for every JWT with an unknown kid value, with no rate limiting. Since kid comes from the unverified token header, an attacker can trigger unlimited outbound requests. The vulnerability surfaces only when a JWKS fetch fails; an attacker can attempt to provoke that with sustained unknown-kid traffic, but the outcome depends on upstream JWKS-endpoint behavior (rate limiting, transient errors) which is beyond the attacker's control. This vulnerability is fixed in 2.13.0.

NVD Source

Technical Analysis

CVE-2026-48524 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.