SiYuan: Stored XSS in Bazaar marketplace via package README event handlers

Summary renderPackageREADME in kernel/bazaar/readme.go renders a Bazaar package README from Markdown to HTML with the lute engine and SetSanitizetrue. The lute sanitizer is an event-handler blocklist: allowAttr rejects only attribute names present in a fixed eventAttrs map copied from the w3schoo...

CVE-2026-54759 SiYuan: Lute HTML sanitizer allows `<iframe>` tags in Bazaar package README, leading to arbitrary command execution via SiYuan Electron client

SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, Lute's HTML sanitizer does not remove elements. Combined with the SiYuan Electron client's permissive security configuration, an attacker can include a malicious in a Bazaar package README that executes arbitrary...

CVE-2026-54759 SiYuan: Lute HTML sanitizer allows `<iframe>` tags in Bazaar package README, leading to arbitrary command execution via SiYuan Electron client

SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, Lute's HTML sanitizer does not remove elements. Combined with the SiYuan Electron client's permissive security configuration, an attacker can include a malicious in a Bazaar package README that executes arbitrary...

CVE-2026-40922 SiYuan: Incomplete sanitization of bazaar README allows stored XSS via iframe srcdoc (incomplete fix for CVE-2026-33066)

SiYuan is an open-source personal knowledge management system. In versions 3.6.1 through 3.6.3, a prior fix for XSS in bazaar README rendering incomplete fix for CVE-2026-33066 enabled the Lute HTML sanitizer, but the sanitizer does not block iframe tags, and its URL-prefix blocklist does not...

CVE-2026-40922

SiYuan is an open-source personal knowledge management system. In versions 3.6.1 through 3.6.3, a prior fix for XSS in bazaar README rendering incomplete fix for CVE-2026-33066 enabled the Lute HTML sanitizer, but the sanitizer does not block iframe tags, and its URL-prefix blocklist does not...

EUVD-2026-23331

SiYuan is an open-source personal knowledge management system. In versions 3.6.1 through 3.6.3, a prior fix for XSS in bazaar README rendering incomplete fix for CVE-2026-33066 enabled the Lute HTML sanitizer, but the sanitizer does not block iframe tags, and its URL-prefix blocklist does not...

CVE-2026-40922

CVE-2026-40922 (SiYuan) : In SiYuan versions 3.6.1–3.6.3, an incomplete sanitization of bazaar README rendering allowed stored XSS via iframe srcdoc, escaping Lute HTML sanitizer and enabling embedded scripts to run in the Electron context with full app privileges. The issue stems from the saniti...

CVE-2026-40922 SiYuan: Incomplete sanitization of bazaar README allows stored XSS via iframe srcdoc (incomplete fix for CVE-2026-33066)

SiYuan is an open-source personal knowledge management system. In versions 3.6.1 through 3.6.3, a prior fix for XSS in bazaar README rendering incomplete fix for CVE-2026-33066 enabled the Lute HTML sanitizer, but the sanitizer does not block iframe tags, and its URL-prefix blocklist does not...

GO-2026-4743 SiYuan has Stored XSS to RCE via Unsanitized Bazaar README Rendering in github.com/siyuan-note/siyuan/kernel

SiYuan has Stored XSS to RCE via Unsanitized Bazaar README Rendering in github.com/siyuan-note/siyuan/kernel...

SiYuan has Stored XSS to RCE via Unsanitized Bazaar README Rendering

Stored XSS to RCE via Unsanitized Bazaar README Rendering Summary SiYuan's Bazaar community marketplace renders package README content without HTML sanitization. The backend renderREADME function uses lute.New without calling SetSanitizetrue, allowing raw HTML embedded in Markdown to pass through...

GHSA-4663-4MPG-879V SiYuan has Stored XSS to RCE via Unsanitized Bazaar README Rendering

Stored XSS to RCE via Unsanitized Bazaar README Rendering Summary SiYuan's Bazaar community marketplace renders package README content without HTML sanitization. The backend renderREADME function uses lute.New without calling SetSanitizetrue, allowing raw HTML embedded in Markdown to pass through...

PT-2026-26188

Name of the Vulnerable Software and Affected Versions SiYuan versions 3.6.0 and earlier SiYuan versions 3.5.9 and earlier Description SiYuan is a personal knowledge management system. The backend 'renderREADME' function uses 'lute.New' without calling 'SetSanitizetrue', allowing raw HTML embedded...