{"apiVersion":"1.0","identifier":"CVE-2026-82234","description":"SiYuan versions before v3.8.1 contain a server-side request forgery vulnerability in the http_request and web_fetch agent tools that perform DNS resolution only at guard time without validating the connect-time resolution. Attackers can use DNS rebinding to answer the guard resolution with a public IP and the connect resolution with a private or metadata IP, bypassing the SSRF defense to access cloud instance metadata and internal services.","publishedAt":"2026-08-28T12:16:33","lastModifiedAt":"2026-08-28T12:16:33","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-82234","cvssScore":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N","epssProbability":0,"riskScore":0.82,"affectedProduct":"SiYuan","affectedVersions":"<3.8.1","vulnerabilityType":"Other","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-82234","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-82234","en":"https://www.redsauce.net/en/cves/CVE-2026-82234","fr":"https://www.redsauce.net/fr/cves/CVE-2026-82234","pt":"https://www.redsauce.net/pt/cves/CVE-2026-82234","de":"https://www.redsauce.net/de/cves/CVE-2026-82234","sk":"https://www.redsauce.net/sk/cves/CVE-2026-82234","el":"https://www.redsauce.net/el/cves/CVE-2026-82234"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-82234"}}