EUVD-2026-45381

The urwid web display backend urwid/display/web.py generates web session identifiers urwidid in Screen.start by concatenating two random.randrange109 calls that use Python's Mersenne Twister PRNG, which is not cryptographically secure. Each call consumes approximately 30 bits of PRNG state, and t...

CVE-2026-9323

The CVE-2026-9323 issue affects the urwid web display backend (urwid/display/web.py), where web session IDs (urwid_id) are created by concatenating two random.randrange(10**9) calls that rely on Python’s Mersenne Twister PRNG. This is not cryptographically secure. An observer collecting ~334 sess...