What’s Vulnerable › Vulnerabilities

CVE-2026-92706: Dark Reader: Ability to request icon-like bitmap data from certain local web servers

• Severity: low (CVSS 3.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-22 · updated 2026-09-24
• Weakness: CWE-200

Description

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.

Affected products

• darkreader: before 4.9.128

References

• https://github.com/darkreader/darkreader/releases/tag/v4.9.126
• https://github.com/darkreader/darkreader/releases/tag/v4.9.128
• https://github.com/darkreader/darkreader/security/advisories/GHSA-jh5x-rphw-x532

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