DECIPHERU · INTELLIGENCECVE

ByJulian Calvo, Ed.D., M.S.Founder, DecipherU
HIGHCVESeptember 19, 2026

CVE-2026-93923, SiYuan through 3.8.4 fails to escape heading style attributes when rendering out...

Source: nvd.nist.gov (CVE-2026-93923) · September 19, 2026
DecipherU Intelligence aggregates cybersecurity developments from government databases, official filings, and authoritative sources. The summary below is written by DecipherU and does not represent the views of the original source. For full details, follow the source link.

Summary

SiYuan through 3.8.4 fails to escape heading style attributes when rendering outline and bookmark dock HTML, allowing stored cross-site scripting. Attackers can supply crafted notebooks or call administrative endpoints to inject malicious style values that execute in the Electron renderer with full system access.

Relevant Roles

incident-responder

For the full cve details, visit the original source.

Read Original Source: nvd.nist.gov
Source: nvd.nist.gov, September 19, 2026. This summary is DecipherU's original writing. For complete details, follow the source link above. This page is for informational purposes only and does not constitute security advice.

Sources

  1. NIST National Vulnerability Database (NVD) · Authoritative CVE records and CVSS scoring.
  2. CISA Advisories · Public-domain US Cybersecurity and Infrastructure Security Agency alerts.
  3. DecipherU Live Feeds · DecipherU aggregates and curates these cybersecurity intelligence items.
Last verified: September 19, 2026?Report an inaccuracy
CVE-2026-93923, SiYuan through 3.8.4 fails to escape heading style attributes when rendering out... Cybersecurity Intelligence