What is GHSA-5x6r-p3h7-38vj?

GHSA-5x6r-p3h7-38vj is a security advisory published by GitHub Security Advisories with Critical severity. SiYuan before v3.8.1 fails to properly escape block name, alias, and memo fields in hint,...

Which CVE IDs does GHSA-5x6r-p3h7-38vj cover?

GHSA-5x6r-p3h7-38vj covers the following CVE IDs: CVE-2026-82654. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-5x6r-p3h7-38vj?

GHSA-5x6r-p3h7-38vj has a CVSS v3 base score of 8.9, published by GitHub Security Advisories.

GHSA-5x6r-p3h7-38vjCriticalCVSS 8.9

SiYuan before v3.8.1 fails to properly escape block name, alias, and memo fields in hint,...

Vendor

GitHub Security Advisories

Published

August 30, 2026

Last Modified

August 30, 2026

🔗 CVE IDs covered (1)

CVE-2026-82654 →

📋 Description

SiYuan before v3.8.1 fails to properly escape block name, alias, and memo fields in hint, backlink, and breadcrumb rendering functions. Attackers can set a block's name to contain HTML/script tags that execute when another user views documents referencing or displaying that block.

🔗 References (4)

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hf87-qh3j-3p88
https://nvd.nist.gov/vuln/detail/CVE-2026-82654
https://www.vulncheck.com/advisories/siyuan-before-3.8.1-stored-xss-via-block-name
https://github.com/advisories/GHSA-5x6r-p3h7-38vj