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CVE-2026-92706

Dark Reader: Ability to request icon-like bitmap data from certain local web servers

CVSS 3.1 3.4 LOWCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-92706

Published

Dark Reader is an accessibility browser extension that makes web pages colors dark. Prior to 4.9.126, a website can cause the browser extension's image inversion pipeline to request an unauthenticated icon-like bitmap from a locally running web server when the resource uses a known public-like HTTPS URL and is detected as requiring inversion. This behavior can cross the website-to-local-network boundary and disclose limited information associated with the requested resource. The darkreader npm package used for website integration is not affected. This issue is fixed in version 4.9.126 for Firefox and version 4.9.128 for other browsers.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-92706

Published

darkreader

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "darkreader",
                    "product": "darkreader",
                    "versions": [
                        {
                            "version": "< 4.9.128",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON