Resource exhaustion in Golang Go
CVE-2025-61726
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.023 (82.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 82.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.023 · change: +0.003
Affected products
- Golang Go
- Go Standard Library Net/url — versions 0, 1.25.0
Weakness classification (CWE)
References
- go.dev/cl/736712 (Patch)
- go.dev/issue/77101 (Patch)
- groups.google.com/g/golang-announce/c/Vd2tYVM8eUc (Mailing List, Release Notes)
- pkg.go.dev/vuln/GO-2026-4341 (Vendor Advisory)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Frequently asked questions
- What is CVE-2025-61726?
- CVE-2025-61726 is a high-severity vulnerability in Golang Go, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-01-28.
- How severe is CVE-2025-61726?
- High severity. CVSS v3 base score is 7.5 out of 10.