CVE•Published 2026-08-18•Modified 2026-08-26•1 article on news•5 live references•NVD data
CVE-2026-74902
Vulnerability data via NVD (ingested)
CVSS v3.1
8.6
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS percentile
4
Exploit Prediction Scoring System · top 96% of all CVEs
Weaknesses (CWE)
Description
SiYuan before v3.7.4 contains a cross-site scripting vulnerability in the file upload validation flow that fails to escape filenames before inserting them into HTML via insertAdjacentHTML. Attackers can craft a malicious filename containing script payloads that execute with full OS command access when a user drags, drops, or pastes the file into the editor.
Timeline
Published 2026-08-18
Modified 2026-08-26
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-2026-74902Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-74902Censys host search filtered to this CVE id.
grep.app
CVE-2026-74902Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-74902GitHub code search for direct mentions.
Google dork
"CVE-2026-74902" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.