PT-2026-42784 · Go+1 · Golang.Org/X/Net+1

Ensy · Published 2026-05-22 · Updated 2026-05-22 · CVE-2026-42506

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions The product name cannot be determined (affected versions not specified)

Description Parsing arbitrary HTML that is subsequently rendered using the Render function can lead to the creation of an unexpected HTML tree. This behavior can be exploited to perform Cross-Site Scripting (XSS) attacks—a technique where malicious scripts are injected into trusted websites—in applications that attempt to sanitize input HTML before the rendering process.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2026-42506

GO-2026-5025

Affected Products

Golang.Org/X/Net

Golang.Org/X/Net/Html

References · 5

• https://osv.dev/vulnerability/GO-2026-5025 · Vendor Advisory
• https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8 · Note
• https://go.dev/issue/79571 · Note
• https://go.dev/cl/781700 · Note
• https://pkg.go.dev/vuln/GO-2026-5025 · Note