CVE-2026-42177

The record

linux-entra-sso is a browser plugin for Linux to SSO on Microsoft Entra ID. Prior to 1.8.1, platform/chrome/js/platform-chrome.js:69-88 registers a single declarativeNetRequest rule whose urlFilter is Platform.SSO_URL + "/*", i.e. "https://login.microsoftonline.com/*". Chrome's urlFilter without a | or || anchor is substring-matched against the full request URL. The same applied rule action is modifyHeaders that attaches the Entra ID Primary Refresh Token cookie. The Firefox adapter in platform/firefox/js/platform-firefox.js:53 performs a belt-and-braces startsWith(Platform.SSO_URL) check before injecting the header; the Chrome adapter does not. When the extension holds broad host permissions through the optional_host_permissions: ["https://*/*"] declared in platform/chrome/manifest.json:34, a main-frame navigation to a URL whose path embeds https://login.microsoftonline.com/ causes Chrome to attach the PRT cookie to the request to the attacker-controlled host. This vulnerability is fixed in 1.8.1.

Affected packages

Related vulnerabilities

• CVE-2026-114574 A security vulnerability has been detected in massCodeIO massCode 5.10. CWE-284
• CVE-2026-83395 Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise… CWE-284
• CVE-2026-112091 A flaw has been found in Dav-ee dairy-management-system… CWE-284
• CVE-2026-106580 ImageMagick is free and open-source software used for editing and manipulating digital… CWE-284
• CVE-2026-61700 MariaDB Connector/J is used to connect applications developed in Java to MariaDB and… CWE-284
• CVE-2026-86812 The WPCafe WordPress plugin before 3.0.18 does not correctly restrict access to a set of… CWE-284
• CVE-2026-85545 There is an Vulnerability in some HikCentral Access Control versions. CWE-284
• CVE-2026-78084 Joomla Extension - joomshaper.com - Missing Access Control in Gallery Image Management in… CWE-284