CVE-2025-47911

medium

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.

References

https://pkg.go.dev/vuln/GO-2026-4440

https://groups.google.com/g/golang-announce/c/jnQcOYpiR2c

https://go.dev/cl/709876

https://github.com/golang/vulndb/issues/4440

https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-206856

Details

Source: Mitre, NVD

Published: 2026-02-05

Updated: 2026-02-18

Named Vulnerability: GO-2026-4440Named Vulnerability: GHSA-w4gw-w5jq-g9jh

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 5.3

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L