Dark Reader: Ability to request icon-like bitmap data from certain local web servers (CVE-2026-92706) | HOL Guard CVE

Low · CVSS 3.4CVE-2026-92706

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

Answer in brief

CVE-2026-92706 records a Low severity (CVSS 3.4) vulnerability in Dark Reader: Ability to request icon-like bitmap data from certain local web servers. The current sources do not mark it as known exploited. The current feed maps darkreader/darkreader (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 22, 2026Updated Sep 22, 2026Source checked Sep 22, 2026First seen by HOL Sep 22, 2026Material review Sep 22, 2026

Upstream Advisory

Key facts

Risk: Low · CVSS 3.4
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 3.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps darkreader/darkreader (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
darkreader/darkreadergeneric	<4.9.128	4.9.128

Recommended response

Check inventory. Check lockfiles and deployed manifests for darkreader/darkreader.
Review the reported fix. Update darkreader/darkreader to 4.9.128 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 22, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.