CVE-2025-47911

low-risk
Published 2026-02-05

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.

Do I need to act?

-
0.02% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.3/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Html

Affected Vendors

Go

References (4)

Issue Tracking https://github.com/golang/vulndb/issues/4440
Patch https://go.dev/cl/709876
Mailing List https://groups.google.com/g/golang-announce/c/jnQcOYpiR2c
Vendor Advisory https://pkg.go.dev/vuln/GO-2026-4440
26
/ 100
low-risk
Severity 21/34 · High
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal