CVE-2026-59725

Description

Socket.IO enables bidirectional and low-latency communication for every platform. From 4.1.0 before 6.6.7, Engine.IO protocol v4 polling transport does not properly close the HTTP response for invalid binary POST requests with Content-Type: application/octet-stream, allowing an unauthenticated attacker to exhaust server-side connections and sockets. This issue is fixed in version 6.6.7.

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Produits concernés

• socketio engine.io
• Socket engine.io

Scores CVSS

Faiblesses (CWE)

• CWE-404

Références

• https://github.com/socketio/socket.io/commit/fc11285e14964c2132d122164bf130c355f60671 Patch
• https://github.com/socketio/socket.io/releases/tag/engine.io@6.6.7 Release Notes
• https://github.com/socketio/socket.io/security/advisories/GHSA-r635-g3xr-vw7x PatchVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories