CVE•Published 2026-06-21•Modified 2026-06-22•1 article on news•5 live references•NVD data
CVE-2026-56397
Vulnerability data via NVD (ingested)
CVSS v3.1
9.6
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS percentile
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Weaknesses (CWE)
Description
SiYuan before v3.6.1 fails to sanitize package metadata and README content in the Bazaar marketplace, allowing malicious package authors to inject arbitrary HTML and JavaScript. Attackers can achieve remote code execution on any user browsing the Bazaar by embedding XSS payloads in package displayName, description, or README fields, exploiting Electron's nodeIntegration setting to execute OS commands.
Timeline
Published 2026-06-21
Modified 2026-06-22
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2026-56397Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-56397Censys host search filtered to this CVE id.
grep.app
CVE-2026-56397Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-56397GitHub code search for direct mentions.
Google dork
"CVE-2026-56397" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-56397 on GitHub.