CVE-2026-25680

Invoking denial of service when parsing arbitrary HTML in golang.org/x/net/html

Published May 22, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
Parsing arbitrary HTML can consume excessive CPU time, possibly leading to denial of service.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-5cv4-jp36-h3mw Go Net HTML parser is vulnerable to denial of service
History
Type Values Removed Values Added
CPEs cpe:2.3:a:golang:net:*:*:*:*:*:go:*:*
Type Values Removed Values Added
First Time appeared Golang
Golang net
Vendors & Products Golang
Golang net
Type Values Removed Values Added
Weaknesses CWE-400
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Parsing arbitrary HTML can consume excessive CPU time, possibly leading to denial of service.
Title Invoking denial of service when parsing arbitrary HTML in golang.org/x/net/html
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Go
Published
Updated
May 22, 2026, 5:00 PM
Reserved
Feb 5, 2026, 1:35 AM
Status
Analyzed
Published
May 22, 2026, 4:16 PM
Modified
Jul 23, 2026, 4:10 PM