CVE-2026-44588

SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, he tooltip mouseover handler in app/src/block/popover.ts reads aria-label via getAttribute and passes it through decodeURIComponent before assigning to messageElement.innerHTML in app/src/dialog/tooltip.ts:41. The encoder used at the producer side, escapeAriaLabel in app/src/util/escape.ts:19-25, only handles HTML special characters (", ', <, literal &lt;) — it leaves %XX URL-escapes untouched. So a doc title containing %3Cimg src=x onerror=...%3E round-trips through escapeAriaLabel and the HTML attribute layer unmodified. Then decodeURIComponent on the consumer side converts %3C to a literal < character (a real <, NOT a character reference). When that string is assigned to innerHTML, the HTML5 tokenizer enters TagOpenState on the literal <, parses the <img> element, and the onerror handler fires. Because the renderer runs with nodeIntegration: true, contextIsolation: false, webSecurity: false (app/electron/main.js:407-411), require('child_process') is reachable from the injected handler, escalating to arbitrary code execution.This vulnerability is fixed in 3.7.0.

• CWE-79
• CWE-116
• CWE-1188

• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-25rp-h46x-2hjm
• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-25rp-h46x-2hjm

Published

May 14, 2026

Last Modified

Jun 17, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-44582Next.js is a React framework for building full-stack web app…3.7
• CVE-2026-44583Paymenter is a free and open-source webshop solution for man…5.3
• CVE-2026-44584Paymenter is a free and open-source webshop solution for man…4.3
• CVE-2026-44585Paymenter is a free and open-source webshop solution for man…5.4
• CVE-2026-44586SiYuan is an open-source personal knowledge management syste…8.3
• CVE-2026-44587CarrierWave is a framework to upload files from Ruby applica…6.1
• CVE-2026-44589Nuxt OG Image generates OG Images with Vue templates in Nuxt…3.7
• CVE-2026-4459Out of bounds read and write in WebAudio in Google Chrome pr…8.8
• CVE-2026-44590Sherlock hunts down social media accounts by username across…9.3
• CVE-2026-44592Gradient is a nix-based continuous integration system. In 1.…9.4
• CVE-2026-44593esm.sh is a no-build content delivery network (CDN) for web …8.7
• CVE-2026-44594esm.sh is a no-build content delivery network (CDN) for web …7.5