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CVE-2026-49854
MEDIUM(5.3)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Risk Signal Score23/100 — NIEDRIG
- CVSS 5.3 — Mittel
- Weniger als 24 Stunden alt
Beschreibung
Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, the optional native extension tornado.speedups implemented websocket_mask without validating that the mask argument is exactly four bytes, allowing the C function to read up to three bytes beyond the provided buffer when reached through Tornado XSRF token decoding with the native extension active. This issue is fixed in version 6.5.6.
GitHub Advisories
GHSA-cx3h-4qpv-8hc9LOW
Tornado has out-of-bounds memory access via C extension
pip/tornado→ 6.5.6
GitHub Advisory