CVE-2026-48522: PyJWKClient: missing scheme allowlist enables SSRF + token forgery via file://, ftp://, data: schemes

Overview

Severity

Medium (CVSS 4.2)

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

Exploit Status

Not Exploited

Patch Tuesday

2026-May

Released

2026-07-24

EPSS Score

0.22% (percentile: 12.8%)

Affected Products (1)

Other

• 20159-17084

Revision History

• 2026-07-24: Information published.