Launch Week Day 1: Announcing Security Design Review
UNKNOWN Go

Memory exhaustion in query parameter parsing in net/url

GO-2026-4341 · BIT-golang-2025-61726 · CVE-2025-61726

Published · Modified

Description

The net/url package does not set a limit on the number of query parameters in a query.

While the maximum size of query parameters in URLs is generally limited by the maximum request header size, the net/http.Request.ParseForm method can parse large URL-encoded forms. Parsing a large form containing many unique query parameters can cause excessive memory consumption.

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