joserfc: Unbounded JWE General JSON `recipients` Array Leads to CPU Exhaustion (DoS) via Repeated RSA Private-Key Dec...

Date Oct 30, 2026
Type Vendor advisory
Signal High-risk advisory
Vendor / Product PyPI ยท joserfc
CVE CVE-2026-119283
High-risk advisory CVE-2026-119283

Summary

joserfc: Unbounded JWE General JSON `recipients` Array Leads to CPU Exhaustion (DoS) via Repeated RSA Private-Key Decryption

Why it matters

GitHub has published a reviewed security advisory for joserfc. Prioritize it with other application dependency updates, especially because EPSS places it in the 14% percentile.

Operator check

Check whether joserfc is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. EPSS probability: 0.2%; percentile: 14%.

Sources

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.