Vulnerability 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.
CVSS Score
5.3
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Go | Html | < 0.45.0 |
References
- https://github.com/golang/vulndb/issues/4440Issue Tracking
- https://go.dev/cl/709876Patch
- https://groups.google.com/g/golang-announce/c/jnQcOYpiR2cMailing ListThird Party Advisory
- https://pkg.go.dev/vuln/GO-2026-4440Vendor Advisory
FAQ
What is CVE-2025-47911?
CVE-2025-47911 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 HT...
How severe is CVE-2025-47911?
CVE-2025-47911 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-47911?
Check the references section above for vendor advisories and patch information. Affected products include: Go Html.