Bug 2495269

Summary: CVE-2026-25681 cri-o1.34: golang.org/x/net/html: Arbitrary code execution via Cross-Site Scripting [fedora-all]
Product: [Fedora] Fedora Reporter: Christopher Lusk <clusk>
Component: cri-o1.34Assignee: Brad Smith <bradley.g.smith>
Status: CLOSED NOTABUG QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: rawhideCC: bradley.g.smith, go-sig
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["2b04a8f8-04fb-4c07-acfa-18c6f346b87d"]}
Fixed In Version: Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-07-07 20:02:29 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2480761    

Description Christopher Lusk 2026-06-30 21:13:02 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.
Comment 1 Brad Smith 2026-07-07 20:02:29 UTC 
    {
      "vulnerability": {
        "@id": "https://pkg.go.dev/vuln/GO-2026-5029",
        "name": "GO-2026-5029",
        "description": "Invoking incorrect handling of character references in DOCTYPE nodes
 in golang.org/x/net/html",
        "aliases": [
          "CVE-2026-25681"
        ]
      },
      "products": [
        {
          "@id": "Unknown Product",
          "subcomponents": [
            {
              "@id": "pkg:golang/golang.org%2Fx%2Fnet.0"
            }
          ]
        }
      ],
      "status": "not_affected",
      "justification": "vulnerable_code_not_in_execute_path",
      "impact_statement": "Govulncheck determined that the vulnerable code isn't called"
    },