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CVE-2025-61726

High

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.

SeverityHigh
CVSS7.5
Exploit probability—
ProductGo
PublishedJan 28, 2026
First seenJan 28, 2026
Weakness typeCWE-400Uncontrolled resource consumption

How to fix

Update
  • golang go1.24.12, 1.25.6 or later
  • stdlib1.24.12, 1.25.6 or later
Vendor advisories

Affected products

ProductAffected versionsFixed in
golang gov < 1.24.12, 1.25.0 ≤ v < 1.25.61.24.12, 1.25.6
stdlibGov < 1.24.12, 1.25.0 ≤ v < 1.25.61.24.12, 1.25.6

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