CVE-2026-119331

The Ladybird web browser is vulnerable to a Same-Origin Policy bypass due to missing origin-clean flag enforcement. Specifically, the CSSStyleSheet.cssRules, insertRule(), and deleteRule() functions in Libraries/LibWeb/CSS/CSSStyleSheet.cpp failed to trigger a SecurityError when handling cross-or...

CVE-2026-119331 Ladybird: Missing origin-clean enforcement in CSSStyleSheet allows cross-origin CSS read and mutation

Ladybird is a truly independent web browser. Prior to the c0d68bddf3e3616e5173835f0f4c155ee9700d91 commit, CSSStyleSheet.cssRules, insertRule, and deleteRule in Libraries/LibWeb/CSS/CSSStyleSheet.cpp did not enforce the stylesheet origin-clean flag with the required SecurityError, even though...

CVE-2026-119331 Ladybird: Missing origin-clean enforcement in CSSStyleSheet allows cross-origin CSS read and mutation

Ladybird is a truly independent web browser. Prior to the c0d68bddf3e3616e5173835f0f4c155ee9700d91 commit, CSSStyleSheet.cssRules, insertRule, and deleteRule in Libraries/LibWeb/CSS/CSSStyleSheet.cpp did not enforce the stylesheet origin-clean flag with the required SecurityError, even though...

CVE-2026-119331 Ladybird: Missing origin-clean enforcement in CSSStyleSheet allows cross-origin CSS read and mutation

Ladybird is a truly independent web browser. Prior to the c0d68bddf3e3616e5173835f0f4c155ee9700d91 commit, CSSStyleSheet.cssRules, insertRule, and deleteRule in Libraries/LibWeb/CSS/CSSStyleSheet.cpp did not enforce the stylesheet origin-clean flag with the required SecurityError, even though...

CVE-2026-44767

The CVE-2026-44767 issue arises from setThemeRoot() not enforcing the sap-allowed-theme-origins allowlist, allowing an attacker-controlled absolute cross-origin URL to be stored and used in a element even without a sap-allowed-theme-origins meta tag. The same bypass is reachable via the ?sap-the...

CVE-2026-44767 Allowlist Bypass in setThemeRoot() Enables Cross-Origin CSS Injection

setThemeRoot failed to enforce the sap-allowed-theme-origins allowlist. An attacker-controlled absolute cross-origin URL could be stored and used directly to construct a element, even when no tag was present in the document. The same bypass was reachable via the ?sap-themeRoot URL...

CVE-2025-68467

Dark Reader is an accessibility browser extension that makes web pages colors dark. The dynamic dark mode feature of the extension works by analyzing the colors of web pages found in CSS style sheet files. In order to analyze cross-origin style sheets stored on websites different from the origina...

CVE-2025-68467

Dark Reader is an accessibility browser extension that makes web pages colors dark. The dynamic dark mode feature of the extension works by analyzing the colors of web pages found in CSS style sheet files. In order to analyze cross-origin style sheets stored on websites different from the origina...

PT-2026-23066

Name of the Vulnerable Software and Affected Versions Dark Reader versions prior to 4.9.117 Dark Reader versions 4.9.117 through 4.9.118 Description Dark Reader, a browser extension designed to enable dark mode on web pages, had a flaw where a website could potentially request style sheets from a...

SUSE CVE-2010-0651

WebKit before r52784, as used in Google Chrome before 4.0.249.78 and Apple Safari before 4.0.5, permits cross-origin loading of CSS stylesheets even when the stylesheet download has an incorrect MIME type and the stylesheet document is malformed, which allows remote attackers to obtain sensitive...

SUSE CVE-2010-0653

Opera before 10.10 permits cross-origin loading of CSS stylesheets even when the stylesheet download has an incorrect MIME type and the stylesheet document is malformed, which allows remote attackers to obtain sensitive information via a crafted document...

UBUNTU-CVE-2016-1692

WebKit/Source/core/css/StyleSheetContents.cpp in Blink, as used in Google Chrome before 51.0.2704.63, permits cross-origin loading of CSS stylesheets by a ServiceWorker even when the stylesheet download has an incorrect MIME type, which allows remote attackers to bypass the Same Origin Policy via...

firefox: cross-domain information disclosure

Mozilla Firefox 3.5.x before 3.5.11 and 3.6.x before 3.6.7, Thunderbird 3.0.x before 3.0.6 and 3.1.x before 3.1.1, and SeaMonkey before 2.0.6 permit cross-origin loading of CSS stylesheets even when the stylesheet download has an incorrect MIME type and the stylesheet document is malformed, which...