Cross-site Scripting (XSS)

Overview league/commonmark is a PHP-based Markdown parser which supports the full CommonMark spec. It is based on the CommonMark JS reference implementation. Affected versions of this package are vulnerable to Cross-site Scripting XSS through AttributesHelper::filterAttributes in...

CVE-2026-86440

Affected versions of MISP insufficiently validate URLs used by dashboard widgets, particularly the Button widget. The widget's URL is stored configuration controlled by a user. The previous renderer considered a URL safe if it appeared relative or if its parsed hostname matched the configured MIS...

CVE-2026-86431

league/commonmark thephpleague/commonmark versions = 2.7.0 and 2.9.1 contain a cross-site scripting vulnerability in the AttributesExtension. Prefixing an attribute name with a single U+000C form feed byte e.g. \x0Conclick="alert1" bypasses the AttributesHelper::filterAttributes 'on' event-handle...

EUVD-2026-72389

league/commonmark thephpleague/commonmark versions = 2.7.0 and 2.9.1 contain a cross-site scripting vulnerability in the AttributesExtension. Prefixing an attribute name with a single U+000C form feed byte e.g. \x0Conclick="alert1" bypasses the AttributesHelper::filterAttributes 'on' event-handle...

CVE-2026-86431

league/commonmark (thephpleague/commonmark) versions >= 2.7.0 and

CVE-2026-86431 commonmark before 2.9.1 XSS via AttributesExtension form feed bypass

league/commonmark thephpleague/commonmark versions = 2.7.0 and 2.9.1 contain a cross-site scripting vulnerability in the AttributesExtension. Prefixing an attribute name with a single U+000C form feed byte e.g. \x0Conclick="alert1" bypasses the AttributesHelper::filterAttributes 'on' event-handle...

CVE-2026-86440 MISP Dashboard Button Widget Allows Stored XSS via Unsafe javascript: and Backslash URLs

Affected versions of MISP insufficiently validate URLs used by dashboard widgets, particularly the Button widget. The widget's URL is stored configuration controlled by a user. The previous renderer considered a URL safe if it appeared relative or if its parsed hostname matched the configured MIS...

EUVD-2026-72372

Affected versions of MISP insufficiently validate URLs used by dashboard widgets, particularly the Button widget. The widget's URL is stored configuration controlled by a user. The previous renderer considered a URL safe if it appeared relative or if its parsed hostname matched the configured MIS...

CVE-2026-86440 MISP Dashboard Button Widget Allows Stored XSS via Unsafe javascript: and Backslash URLs

Affected versions of MISP insufficiently validate URLs used by dashboard widgets, particularly the Button widget. The widget's URL is stored configuration controlled by a user. The previous renderer considered a URL safe if it appeared relative or if its parsed hostname matched the configured MIS...

CVE-2026-86440

MISP 's dashboard Button widget is affected by a stored XSS caused by insufficient URL validation. The prior renderer treated a URL as safe if it appeared relative or matched the configured MISP hostname, but failed to reject dangerous schemes such as javascript: or backslash-based authority form...

CVE-2026-86440 MISP Dashboard Button Widget Allows Stored XSS via Unsafe javascript: and Backslash URLs

Affected versions of MISP insufficiently validate URLs used by dashboard widgets, particularly the Button widget. The widget's URL is stored configuration controlled by a user. The previous renderer considered a URL safe if it appeared relative or if its parsed hostname matched the configured MIS...

JSCeal Malware Can Bypass Google Authentication Using Stolen Session Cookies

Cybersecurity researchers have unpacked JSCeal , a sophisticated compiled V8 JavaScript JSC malware with credential harvesting, surveillance, and traffic-interception capabilities. "The payloads are protected with javascript-obfuscator, using multiple techniques including RC4-protected strings,...

CVE-2026-86315

A flaw was found in Samsung Open Source Escargot. This out-of-bounds write vulnerability, caused by numeric truncation, allows an attacker to corrupt native memory. By supplying specially crafted JavaScript for execution, a remote attacker can trigger this flaw, leading to the host process crashi...

CVE-2026-86315

An out-of-bounds write caused by numeric truncation Samsung Open Source Escargot on Linux x86-64 allows an attacker who can supply JavaScript for execution to corrupt native memory and crash the host process via a crafted class definition whose instance initialization entry count exceeds UINT16MA...

CVE-2026-86315

Samsung Open Source Escargot (a JavaScript engine) on Linux x86-64 is affected by an out-of-bounds write caused by numeric truncation. A crafted class definition whose instance initialization entry count exceeds UINT16_MAX allows an attacker who can supply JavaScript for execution to corrupt nati...

EUVD-2026-72246

An out-of-bounds write caused by numeric truncation Samsung Open Source Escargot on Linux x86-64 allows an attacker who can supply JavaScript for execution to corrupt native memory and crash the host process via a crafted class definition whose instance initialization entry count exceeds UINT16MA...

PT-2026-86770

Affected versions of MISP insufficiently validate URLs used by dashboard widgets, particularly the Button widget. The widget's URL is stored configuration controlled by a user. The previous renderer considered a URL safe if it appeared relative or if its parsed hostname matched the configured MIS...

PT-2026-86797

league/commonmark thephpleague/commonmark versions = 2.7.0 and 2.9.1 contain a cross-site scripting vulnerability in the AttributesExtension. Prefixing an attribute name with a single U+000C form feed byte e.g. x0Conclick="alert1" bypasses the AttributesHelper::filterAttributes 'on' event-handler...

ROS-20260907-73-0017

The vulnerability of JavaScript script handlers in Google Chrome and Microsoft Edge browsers is related to the execution of operations outside of the buffer in memory. Exploiting this vulnerability allows a remote attacker to execute arbitrary code within the browser’s sandbox through the created...

ROS-20260907-73-0003

The vulnerability of the JavaScript script handler in Google Chrome’s V8 engine is related to the execution of operations outside of the buffer in memory. Exploiting this vulnerability allows a remote attacker to execute arbitrary code through a specially created HTML page...