SiYuan: getUniqueFilename passes an unvalidated client-supplied path to the filesystem, giving anonymous readers an existence oracle over the entire host filesystem

[ Description ]Official description

SiYuan versions before v3.7.4 contain a path traversal vulnerability in the getUniqueFilename endpoint that allows anonymous readers to probe filesystem existence without validation or confinement. Attackers can supply arbitrary absolute paths to determine whether files and directories exist on the host, enabling reconnaissance of the filesystem layout and installed software.

[ Fixes ]Fixes and patches

• github.com/siyuan-note/siyuan/kernel 0.0.0-20260812083335-251596fc0de2Fixed version · GitHub Advisories · go package github.com/siyuan-note/siyuan/kernel: upgrade to 0.0.0-20260812083335-251596fc0de2 or later (affected < 0.0.0-20260812083335-251596fc0de2)

[ Packages ]Affected open-source packages

• github.com/siyuan-note/siyuan/kernel goAffected < 0.0.0-20260812083335-251596fc0de2 · fixed in 0.0.0-20260812083335-251596fc0de2 · GHSA-hf8h-97gm-4x2p

[ References ]References

• github.com/siyuan-note/siyuan/security/advisories/GHSA-hf8h-97gm-4x2pvendor-advisory
• www.vulncheck.com/advisories/siyuan-before-path-traversal-via-getuniquefilenamethird-party-advisory