{"@context":"https://openvex.dev/ns/v0.2.0","@id":"https://database.harborguard.co/cve/CVE-2026-12151/vex.json","author":"HarborGuard Database","role":"Document Creator","timestamp":"2026-06-17T17:30:13.782Z","version":1,"tooling":"HarborGuard Database (https://database.harborguard.co)","statements":[{"vulnerability":{"name":"CVE-2026-12151","@id":"https://www.cve.org/CVERecord?id=CVE-2026-12151","description":"Impact:\nThe undici WebSocket client enforces maxPayloadSize on the cumulative byte count of fragments in a message but does not enforce a limit on the number of fragments. A malicious WebSocket server can stream many small or empty continuation frames that each pass per-frame and cumulative-size validation, collectively causing unbounded memory growth in the client process. The result is memory exhaustion and a denial of service.\n\nAffected applications are those using the undici WebSocket client"},"products":[{"@id":"cpe:2.3:a:undici:undici:*:*:*:*:*:*:*:*","identifiers":{"cpe23":"cpe:2.3:a:undici:undici:*:*:*:*:*:*:*:*"}}],"status":"affected","action_statement":"Update to a fixed version: 6.26.0, 7.28.0, 8.5.0.","timestamp":"2026-06-17T17:30:13.782Z"}]}