What is GHSA-4fq5-2r2r-5cw9?

GHSA-4fq5-2r2r-5cw9 is a security advisory published by GitHub Security Advisories with High severity. SiYuan versions before v3.8.4 contain a path traversal vulnerability in the checkoutRepo endpoint...

Which CVE IDs does GHSA-4fq5-2r2r-5cw9 cover?

GHSA-4fq5-2r2r-5cw9 covers the following CVE IDs: CVE-2026-100637. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-4fq5-2r2r-5cw9?

GHSA-4fq5-2r2r-5cw9 has a CVSS v3 base score of 7.6, published by GitHub Security Advisories.

GHSA-4fq5-2r2r-5cw9HighCVSS 7.6

SiYuan versions before v3.8.4 contain a path traversal vulnerability in the checkoutRepo endpoint...

Vendor

GitHub Security Advisories

Published

September 26, 2026

Last Modified

September 26, 2026

🔗 CVE IDs covered (1)

CVE-2026-100637 →

📋 Description

SiYuan versions before v3.8.4 contain a path traversal vulnerability in the checkoutRepo endpoint that allows authenticated administrators to write JSON files outside the workspace. Attackers can supply a sessionID parameter containing directory traversal sequences to overwrite arbitrary JSON files in pre-existing kernel-writable directories outside workspace boundaries.

🔗 References (4)

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-jhmh-hr4g-c5g2
https://nvd.nist.gov/vuln/detail/CVE-2026-100637
https://www.vulncheck.com/advisories/siyuan-before-3.8.4-path-traversal-via-checkoutrepo-sessionid
https://github.com/advisories/GHSA-4fq5-2r2r-5cw9