CVE-2026-27136

medium

Description

Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering.

References

https://pkg.go.dev/vuln/GO-2026-5030

https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8

https://go.dev/issue/79575

https://go.dev/cl/781685

Details

Source: Mitre, NVD

Published: 2026-05-22

Updated: 2026-05-22

Risk Information

CVSS v2

Base Score: 6.4

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

Severity: Medium

CVSS v3

Base Score: 6.1

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