CVE-2025-61726

Name	CVE-2025-61726
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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1125916, 1125917

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
golang-1.15 (PTS)	bullseye	1.15.15-1~deb11u4	vulnerable
golang-1.19 (PTS)	bookworm	1.19.8-2	vulnerable
golang-1.24 (PTS)	trixie	1.24.4-1	vulnerable
	forky	1.24.9-1	vulnerable
	sid	1.24.12-1	fixed
golang-1.25 (PTS)	forky	1.25.3-1	vulnerable
	sid	1.25.7-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Debian Bugs
golang-1.15	source	(unstable)	(unfixed)
golang-1.19	source	(unstable)	(unfixed)
golang-1.24	source	(unstable)	1.24.12-1	1125917
golang-1.25	source	(unstable)	1.25.6-1	1125916

Notes

[trixie] - golang-1.24 <no-dsa> (Minor issue)
[bookworm] - golang-1.19 <no-dsa> (Minor issue)
[bullseye] - golang-1.15 <postponed> (Limited support, DoS, minor issue, follow bookworm DSAs/point-releases)
https://groups.google.com/g/golang-announce/c/Vd2tYVM8eUc
https://github.com/golang/go/issues/77101
Fixed by: https://github.com/golang/go/commit/afa9b66ac081d3b239d8c1a226b5e884c8435185 (go1.25.6)
Fixed by: https://github.com/golang/go/commit/85c794ddce26a092b0ea68d0fca79028b5069d5a (go1.24.12)