CVE-2026-33151: falha de alta gravidade em socketio socket.io
socket.io allows an unbounded number of binary attachments
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21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 8.7epss 0.5%
Socket.IO is an open source, real-time, bidirectional, event-based, communication framework. Prior to versions 3.3.5, 3.4.4, and 4.2.6, a specially crafted Socket.IO packet can make the server wait for a large number of binary attachments and buffer them, which can be exploited to make the server run out of memory. This issue has been patched in versions 3.3.5, 3.4.4, and 4.2.6.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Produtos afetados
socketio · socket.ioCVEs relacionadas — socketio socket.io
No mesmo produto, das mais perigosas para as menos.
CVE-2024-38355HIGHUnhandled 'error' event in socket.ioEPSS 0.8%CVE-2026-69185HIGHSocket.IO: Zero-attachment Memory ExhaustionEPSS 0.6%CVE-2026-59724HIGHSocket.IO: Engine.IO WebTransport SID DoSEPSS 0.6%CVE-2026-102599HIGHSocket.IO: Engine.IO Protocol Revision Mismatch DoSEPSS 0.6%CVE-2026-102600HIGHSocket.IO: Prototype Pollution via Unsafe Client Session LookupEPSS 0.4%
Referências
https://github.com/socketio/socket.io/commit/719f9ebab0772ffb882bd614b387e585c1aa75d4https://github.com/socketio/socket.io/commit/9d39f1f080510f036782f2177fac701cc041faafhttps://github.com/socketio/socket.io/commit/b25738c416c4e32fbff62ee182afa8f6d0dacf78https://github.com/socketio/socket.io/security/advisories/GHSA-677m-j7p3-52f9