CVE-2026-25680

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

State: Published
Severity: 6.5 Medium
Published: May 22, 2026
Updated: May 22, 2026
Reserved: Feb 5, 2026

Description

Parsing arbitrary HTML can consume excessive CPU time, possibly leading to denial of service.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
golang.org/x/net/htmlgolang.org/x/net	before 0.55.0Affected

References

https://go.dev/cl/781702
https://go.dev/issue/79573
https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8
https://pkg.go.dev/vuln/GO-2026-5028

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