Bug 2494620

Summary: CVE-2026-42506 golang-x-tools: golang.org/x/net/html: Cross-Site Scripting (XSS) via arbitrary HTML parsing [fedora-all]
Product: [Fedora] Fedora Reporter: jkelly <jkelly>
Component: golang-x-toolsAssignee: Mark E. Fuller <mark.e.fuller>
Status: NEW --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: epel-packagers-sig, go-sig, mark.e.fuller, quantum.analyst
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["6c2913d9-dbc3-415e-af95-2945c11ad270"]}
Fixed In Version: Doc Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2480759    

Description jkelly 2026-06-29 19:17:13 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

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.