Vulnerability in Go Html
CVE-2025-47911
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.
EPSS: 0.005 (40.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Go Html
- Golang.org/x/net Golang.org/x/net/html — versions 0
References
- security@golang.org (Patch)
- security@golang.org (Issue Tracking)
- security@golang.org (Mailing List, Third Party Advisory)
- security@golang.org (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-47911?
- CVE-2025-47911 is a medium-severity vulnerability in Go Html, classified under CWE-400: UNCONTROLLED RESOURCE CONSUMPTION. CVSS score: 5.3/10. Published 2026-02-05.
- How severe is CVE-2025-47911?
- Medium severity. CVSS v3 base score is 5.3 out of 10.