CVE-2026-108261

Tina, a headless content management system, is vulnerable to an origin validation error in versions prior to tinacms 3.14.0 and @tinacms/app 2.5.14 . The vulnerability exists because the /~/* admin preview route can convert an attacker-controlled hash-router splat into an off-origin iframe URL vi...

CVE-2026-108261 TinaCMS admin preview iframe loads an attacker-controlled origin from the URL fragment

Tina is a headless content management system. Prior to tinacms 3.14.0 and @tinacms/app 2.5.14, the // admin preview route in packages/tinacms/src/admin/index.tsx can turn an attacker-controlled hash-router splat into an off-origin iframe URL through packages/@tinacms/app/src/preview.tsx, while...

Astra Linux – Vulnerability in Firefox and Thunderbird

An iframe from a cross-origin origin that references an XSLT document would inherit the permissions of the parent domain such as access to microphones or cameras. This vulnerability affects Thunderbird 102.2, Thunderbird 91.13, Firefox ESR 91.13, Firefox ESR 102.2, and Firefox 104...

Astra Linux – Vulnerability in Firefox and Thunderbird

Dragging a URL from a cross-origin iframe that was removed during the drag-and-drop process could lead to user confusion and website spoofing attacks. This vulnerability affects Firefox 111, Firefox ESR 102.9, and Thunderbird 102.9...

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...

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...

CVE-2026-91134

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...

CVE-2026-91134

The open-source discussion platform Discourse contains a vulnerability in its post sanitizer prior to versions 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0 . The root cause is a logic flaw where the sanitizer validates a decoded form of an iframe src differently than how the browser interprets it. ...

CVE-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...

EUVD-2026-86298

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...

CVE-2026-91134: Improper Input Validation

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...

PT-2026-98154

Name of the Vulnerable Software and Affected Versions Discourse versions prior to 2026.1.8 Discourse versions prior to 2026.6.3 Discourse versions prior to 2026.7.2 Discourse versions prior to 2026.8.0 Description The post sanitizer allows a stored cross-origin iframe to bypass the allowed iframe...

Astra Linux – Vulnerability in Thunderbird, Firefox

Navigation was allowed when dragging a URL from a cross-origin iframe into the same tab, which could lead to website spoofing attacks. This vulnerability affects Firefox 109, Firefox ESR 102.7, and Thunderbird 102.7...

Open WebUI: Same-origin XSS to account takeover via terminal file-preview iframe hardcoding allow-same-origin

SummaryAny authenticated user with access to a terminal server could get script of their choosing to run in the Open WebUI origin itself. The HTML file preview rendered terminal-served files in an iframe whose sandbox always granted allow-same-origin alongside allow-scripts, and the file is serve...

CVE-2026-66298 JS-view sandboxed output can synthesize keyboard events to trigger unconfirmed global shortcuts

Origin Validation Error vulnerability in livebook-dev livebook allows untrusted notebook output JavaScript to trigger session-wide keyboard shortcuts, including forced evaluation of all cells and runtime restart. Livebook's JS-view feature renders notebook-defined JavaScript inside a sandboxed,...

CVE-2026-66298

Origin Validation Error vulnerability in livebook-dev livebook allows untrusted notebook output JavaScript to trigger session-wide keyboard shortcuts, including forced evaluation of all cells and runtime restart. Livebook's JS-view feature renders notebook-defined JavaScript inside a sandboxed,...

CVE-2026-70600

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3, the native autofill popup could be positioned by a cross-origin iframe outside that iframe's bounds, over the embedding page's UI, enabling...

GHSA-X8RC-WPG4-GRPF Electron: Cross-origin iframe can position native autofill popup

Impact The native autofill popup could be positioned by a cross-origin iframe outside that iframe's bounds, over the embedding page's UI, enabling clickjacking or spoofing of trusted UI. Apps are only affected if they embed untrusted content in iframes within windows that also display trusted UI...

Improper Restriction of Rendered UI Layers or Frames

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 Improper Restriction of Rendered UI Layers or Frames in the handling of cross-origin iframes, which allows the native...

Electron: Cross-origin iframe can position native autofill popup

Impact The native autofill popup could be positioned by a cross-origin iframe outside that iframe's bounds, over the embedding page's UI, enabling clickjacking or spoofing of trusted UI. Apps are only affected if they embed untrusted content in iframes within windows that also display trusted UI...