CVE-2026-33936 python-ecdsa: Denial of Service via improper DER length validation in crafted private keys

The ecdsa PyPI package is a pure Python implementation of ECC Elliptic Curve Cryptography with support for ECDSA Elliptic Curve Digital Signature Algorithm, EdDSA Edwards-curve Digital Signature Algorithm and ECDH Elliptic Curve Diffie-Hellman. Prior to version 0.19.2, an issue in the low-level D...