SVGO: removeScripts incompletely sanitizes executable HTML in SVG foreignObject elements

Summary SVGO's opt-in removeScripts plugin did not inspect executable HTML content inside SVG elements. Applications that used this plugin as their only protection for untrusted SVG input could produce SVGs containing active HTML and expose users to cross-site scripting XSS. SVGO is an optimizer...

CVE-2026-6827

justhtml before 1.17.0 (a Python HTML sanitization library) contains multiple security flaws in sanitization, serialization, and programmatic DOM handling. When custom policies preserve foreign namespaces (SVG/MathML), HTML integration points such as SVG and MathML can survive sanitization and ...

EUVD-2026-21148

SiYuan Affected by Zero-Click NTLM Hash Theft and Blind SSRF via Mermaid Diagram Rendering...

CVE-2026-40107 SiYuan Affected by Zero-Click NTLM Hash Theft and Blind SSRF via Mermaid Diagram Rendering

SiYuan is a personal knowledge management system. Prior to 3.6.4, SiYuan configures Mermaid.js with securityLevel: "loose" and htmlLabels: true. In this mode, tags with src attributes survive Mermaid's internal DOMPurify and land in SVG blocks. The SVG is injected via innerHTML with no secondary...

CVE-2026-40107

Summary: SiYuan before 3.6.4 configures Mermaid.js with securityLevel: loose and htmlLabels: true, allowing tags to survive DOMPurify and land in SVG blocks. The SVG is injected via innerHTML with no secondary sanitization. When a user opens a note containing a malicious Mermaid diagram, the El...

GHSA-2M4F-CG75-76W2 NiceGUI Stored/Reflected XSS in ui.interactive_image via unsanitized SVG content

Summary A Cross-Site Scripting XSS vulnerability exists in the ui.interactiveimage component of NiceGUI v3.3.1 and earlier. The component renders SVG content using Vue's v-html directive without any sanitization. This allows attackers to inject malicious HTML or JavaScript via the SVG tag. Detail...

WebKit: multiple vulnerabilities in WebKitGTK

Use-after-free vulnerability in WebKit in Apple Safari before 5.0.1 on Mac OS X 10.5 through 10.6 and Windows, and before 4.1.1 on Mac OS X 10.4; and webkitgtk before 1.2.6; allows remote attackers to execute arbitrary code or cause a denial of service application crash via a foreignObject elemen...