Suspicious Python AF_ALG Cryptography for CVE-2026-31431 Exploitation

Ethan Andrews@eandrews

•updated May 4, 2026•25•0•1,066

Detects Python command lines referencing a specific cryptographic string ('authencesn(hmac(sha256),cbc(aes))') known to be used in the exploitation of the 'Copy Fail' vulnerability (CVE-2026-31431). This string is highly specific and its presence in a Python command line is indicative of an attempt to exploit this particular CVE.