What is GHSA-w7g2-952j-gmgr?

GHSA-w7g2-952j-gmgr is a security advisory published by GitHub Security Advisories with Critical severity. SiYuan before v3.7.4 fails to validate the packageName parameter in Bazaar install and uninstall...

Which CVE IDs does GHSA-w7g2-952j-gmgr cover?

GHSA-w7g2-952j-gmgr covers the following CVE IDs: CVE-2026-77086. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-w7g2-952j-gmgr?

GHSA-w7g2-952j-gmgr has a CVSS v3 base score of 9.1, published by GitHub Security Advisories.

GHSA-w7g2-952j-gmgrCriticalCVSS 9.1

SiYuan before v3.7.4 fails to validate the packageName parameter in Bazaar install and uninstall...

Vendor

GitHub Security Advisories

Published

August 21, 2026

Last Modified

August 21, 2026

🔗 CVE IDs covered (1)

CVE-2026-77086 →

📋 Description

SiYuan before v3.7.4 fails to validate the packageName parameter in Bazaar install and uninstall endpoints, allowing authenticated administrators to perform path traversal via directory traversal sequences. Attackers with admin access can write arbitrary files to any location via install operations or recursively delete directories via uninstall operations by supplying crafted packageName values.

🔗 References (4)

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-wr4w-7vjm-mmx3
https://nvd.nist.gov/vuln/detail/CVE-2026-77086
https://www.vulncheck.com/advisories/siyuan-before-path-traversal-via-packagename
https://github.com/advisories/GHSA-w7g2-952j-gmgr