CVE-2026-73047

siyuan versions <= 3.7.3 (fixed in v3.7.4) contain a server-side template injection vulnerability in the attribute-view Template calculation feature (introduced in v3.7.0-beta.1). The feature's template engine uses Sprig's unmodified function map, which still exposes the env, expandenv, and getHostByName functions that were removed elsewhere for CVE-2024-55660. A local, unauthenticated attacker (the kernel binds to 127.0.0.1 by default with no per-UID access control) can inject a malicious Template calculation formula to read environment variables belonging to the account running siyuan — including from a separate, unprivileged OS account — and to perform DNS lookups from the server's network position.

No package data available.

Publisher and database URLs for this record (shown for attribution; reading stays in Bugflare).

• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-v97v-gxxg-rhmq
• https://www.vulncheck.com/advisories/siyuan-before-server-side-template-injection-via-attribute-view