high8.2
CVE-2026-82234
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 onl…
Impact
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.
Affected products
| Product | Affected versions |
|---|---|
| SiYuan | before 3.8.1 |
Versions were read from the advisory text. No structured product data has been published for this record yet.