BIT-DISCOURSE-2026-91134 Discourse: Block post iframes whose encoded userinfo bypasses the allowed_iframes allowlist

Discourse is an open-source discussion platform. Prior to 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0, the Discourse post sanitizer allowed a stored cross-origin iframe to bypass the allowediframes prefix policy when the iframe src contained encoded userinfo. The sanitizer validated a decoded form...

BIT-DISCOURSE-2026-91132 Discourse: Wildcard iframe origin allowlist bypass via authority separators

Discourse is an open-source discussion platform. Prior to 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0, sites using wildcard patterns in the allowediframes setting could accept a crafted iframe URL whose allowlisted suffix appeared after a URL authority separator. The wildcard origin check matched...

BIT-DISCOURSE-2026-91123 Discourse: Reject literal backslash path separators in iframe src traversal guard

Discourse is an open-source discussion platform. Prior to 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0, the iframe src traversal guard did not treat literal backslashes as path separators after decoded dot segments. A crafted source could therefore pass an allowediframes subpath check while browser...

CLEANSTART-2024-RH18050 Inappropriate implementation in iframe in Google Chrome prior to 101

Security vulnerability affects the chromium package. Inappropriate implementation in iframe in Google Chrome prior to 101...

PT-2026-105080

Discourse is an open-source discussion platform. Prior to 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0, the iframe src traversal guard did not treat literal backslashes as path separators after decoded dot segments. A crafted source could therefore pass an allowed iframes subpath check while browse...

CVE-2026-103278: Relative Path Traversal

Ghost versions 5.8.0 before 6.34.0 contain an input validation vulnerability in the admin iframe that allows attackers to take over staff user accounts. Attackers with content publishing privileges can craft malicious pages that, when visited by active staff users, enable account takeover through...

PT-2026-105872

Summary Any authenticated user with access to a shared terminal server could get script of their choosing to run in the Open WebUI origin itself. The in-app port preview rendered the content of a previewed port in an iframe whose sandbox always granted allow-same-origin alongside allow-scripts, a...

PT-2026-105081

Discourse is an open-source discussion platform. Prior to 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0, sites using wildcard patterns in the allowed iframes setting could accept a crafted iframe URL whose allowlisted suffix appeared after a URL authority separator. The wildcard origin check matched...

PT-2026-103810

Name of the Vulnerable Software and Affected Versions Ghost versions 5.8.0 through 6.33.x Description An input validation issue exists within the admin iframe. Attackers possessing content publishing privileges can create malicious pages that, when accessed by active staff users, facilitate the...

PT-2026-105083

Discourse is an open-source discussion platform. Prior to 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0, the Discourse post sanitizer allowed a stored cross-origin iframe to bypass the allowed iframes prefix policy when the iframe src contained encoded userinfo. The sanitizer validated a decoded for...

Rocky Linux 8 [CIQ] Security Update: firefox / firefox-debuginfo / firefox-debugsource Multiple Vulnerabilities (crlsa-2021_4123)

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-20214123 advisory. Mozilla: Use-after-free in HTTP2 Session object Mozilla: Memory safety bugs fixed in Firefox 94 and Firefox ESR 91.3 Mozilla: iframe sandbox rules did not...

Rocky Linux 8 [CIQ] Security Update: thunderbird / thunderbird-debuginfo / thunderbird-debugsource Multiple Vulnerabilities (crlsa-2022_1730)

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-20221730 advisory. Mozilla: Bypassing permission prompt in nested browsing contexts CVE-2022-29909 Mozilla: iframe Sandbox bypass CVE-2022-29911 Mozilla: Fullscreen...

Linux Distros Unpatched Vulnerability : CVE-2026-102673

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.4, 42.5.2, and 43.0.0, popups opened from...

Rocky Linux 8 [CIQ] Security Update: firefox / firefox-debuginfo / firefox-debugsource Multiple Vulnerabilities (crlsa-2022_1705)

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-20221705 advisory. Mozilla: Bypassing permission prompt in nested browsing contexts CVE-2022-29909 Mozilla: iframe Sandbox bypass CVE-2022-29911 Mozilla: Fullscreen...

webkitgtk: Maliciously crafted web content may violate iframe sandboxing policy

A flaw was found in WebKitGTK. Processing malicious web content can violate the iframe sandboxing policy due to improper validation...

Malicious Package

Overview epic-web-payment-management-iframe is a malicious package. This package contains malicious code, and its content was removed from the official package manager. While this package might be attempting to impersonate a valid organization, there is no connection between that organization and...

GHSA-HQ2X-R82H-9WJ4 Electron drops inherited HTML sandbox restrictions for popups opened through OpenURLFromTab

Impact Popups opened from a sandboxed iframe through a link for example target="blank" or a middle-click did not inherit the iframe's HTML sandbox restrictions. Content that was meant to run sandboxed could open a popup with the embedding app's full origin, gaining access to that origin's cookies...

Origin Validation Error

Overview electron is a framework which lets you write cross-platform desktop applications using JavaScript, HTML and CSS. Affected versions of this package are vulnerable to Origin Validation Error via the OpenURLFromTab navigation path, when a sandboxed iframe with allow-popups but without...

Origin Validation Error

Overview org.webjars.npm:electron is a framework which lets you write cross-platform desktop applications using JavaScript, HTML and CSS. Affected versions of this package are vulnerable to Origin Validation Error via the OpenURLFromTab navigation path, when a sandboxed iframe with allow-popups b...

CVE-2026-102673

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.4, 42.5.2, and 43.0.0, popups opened from a sandboxed iframe through Electron's OpenURLFromTab navigation path, including links using target="blank" or a middle-click, did not...