CVE•Published 2026-08-17•Modified 2026-08-28•1 article on news•7 live references•NVD data
CVE-2026-74802
Vulnerability data via NVD (ingested)
CVSS v3.1
8.2
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
EPSS percentile
1
Exploit Prediction Scoring System · top 99% of all CVEs
Weaknesses (CWE)
Description
SiYuan versions before 3.7.4 contain a cross-site WebSocket hijacking vulnerability in the admin-only /ws/network/proxy endpoint that explicitly disables origin validation by setting CheckOrigin to unconditionally return true. Attackers can craft malicious webpages that establish WebSocket connections to this endpoint and direct the SiYuan kernel process to proxy arbitrary network traffic to attacker-chosen targets, enabling authenticated network pivoting through the victim's machine.
Timeline
Published 2026-08-17
Modified 2026-08-28
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-2026-74802Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-74802Censys host search filtered to this CVE id.
grep.app
CVE-2026-74802Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-74802GitHub code search for direct mentions.
Google dork
"CVE-2026-74802" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-74802 on GitHub.