CVE-2025-47911
MEDIUM5.3EPSS 0.02%Quadratic parsing complexity in golang.org/x/net/html
Published: 2/12/2026Modified: 5/15/2026
Description
The html.Parse function in golang.org/x/net/html has quadratic parsing complexity when processing certain inputs, which can lead to denial of service (DoS) if an attacker provides specially crafted HTML content.
Affected packages (3)
- Debian/golang-golang-x-netfrom 0
- Go/golang.org/x/netfrom 0, < 0.45.0
- Go/golang.org/x/net/htmlfrom 0, < 0.45.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
References (7)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2025-47911
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2025-47911
- PATCHhttps://go.googlesource.com/net
- WEBhttps://github.com/golang/vulndb/issues/4440
- WEBhttps://go.dev/cl/709876
- WEBhttps://groups.google.com/g/golang-announce/c/jnQcOYpiR2c
- WEBhttps://pkg.go.dev/vuln/GO-2026-4440