MEDIUMPyPI →
PyJWKClient: missing scheme allowlist enables CVE-2024-21643-class SSRF + token forgery via file://, ftp://, data: schemes
PyJWKClient: missing scheme allowlist enables CVE-2024-21643-class SSRF + token forgery via file://, ftp://, data: schemes
Affected packages
- pyjwt— 2.0.0 → 2.13.0
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- 0.22%
- EPSS percentile
- 12.8%
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs. This advisory is in the top 13%.
Sources
- https://github.com/jpadilla/pyjwt/security/advisories/GHSA-993g-76c3-p5m4
- https://nvd.nist.gov/vuln/detail/CVE-2026-48522
- https://github.com/github/advisory-database/pull/8521
- https://github.com/jpadilla/pyjwt
- https://github.com/pypa/advisory-database/tree/main/vulns/pyjwt/PYSEC-2026-175.yaml
Structured record: https://osv.dev/vulnerability/GHSA-993g-76c3-p5m4
Recommended response stack
Snyk — Scan your dependencies in CI and fix this vulnerability.→Socket — Detect malicious and compromised packages before they ship.→
Some links are affiliate links — HackTribune may earn a commission at no extra cost to you.
Get incidents like this as alerts for your stack.
Join the beta