CVE-2025-61726
Memory exhaustion in query parameter parsing in net/url
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.
INFO
Published Date :
Jan. 28, 2026, 8:16 p.m.
Last Modified :
Feb. 6, 2026, 6:47 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Implement a limit on the number of query parameters.
- Reject requests exceeding the query parameter limit.
- Update the net/url package if possible.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-61726.
| URL | Resource |
|---|---|
| https://go.dev/cl/736712 | Patch |
| https://go.dev/issue/77101 | Patch |
| https://groups.google.com/g/golang-announce/c/Vd2tYVM8eUc | Release Notes Mailing List |
| https://pkg.go.dev/vuln/GO-2026-4341 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-61726 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-61726
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-61726 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-61726 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Feb. 06, 2026
Action Type Old Value New Value Added CWE CWE-770 Added CPE Configuration OR *cpe:2.3:a:golang:go:*:*:*:*:*:*:*:* versions up to (excluding) 1.24.12 *cpe:2.3:a:golang:go:*:*:*:*:*:*:*:* versions from (including) 1.25.0 up to (excluding) 1.25.6 Added Reference Type Go Project: https://go.dev/cl/736712 Types: Patch Added Reference Type Go Project: https://go.dev/issue/77101 Types: Patch Added Reference Type Go Project: https://groups.google.com/g/golang-announce/c/Vd2tYVM8eUc Types: Mailing List, Release Notes Added Reference Type Go Project: https://pkg.go.dev/vuln/GO-2026-4341 Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jan. 29, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H -
New CVE Received by [email protected]
Jan. 28, 2026
Action Type Old Value New Value Added 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. Added Reference https://go.dev/cl/736712 Added Reference https://go.dev/issue/77101 Added Reference https://groups.google.com/g/golang-announce/c/Vd2tYVM8eUc Added Reference https://pkg.go.dev/vuln/GO-2026-4341