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

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-31451

Details

Source: Mitre, NVD

Published: 2026-05-22

Updated: 2026-07-23

Named Vulnerability: GO-2026-5030Named Vulnerability: GHSA-m9x8-m34x-fj9q

Risk Information

CVSS v2

Base Score: 9.4

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

Severity: High

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

Severity: Medium

EPSS

EPSS: 0.00223

Detections

Analytics