CVE-2026-40922

Katalog CVE

CVSS 5.4 · Medium EPSS 0,38%

Kerentanan Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') pada b3log siyuan. Skor CVSS 3.1 5.4 (Medium) menurut NVD.

Deskripsi (NVD)

SiYuan is an open-source personal knowledge management system. In versions 3.6.1 through 3.6.3, a prior fix for XSS in bazaar README rendering (incomplete fix for CVE-2026-33066) enabled the Lute HTML sanitizer, but the sanitizer does not block iframe tags, and its URL-prefix blocklist does not effectively filter srcdoc attributes which contain raw HTML rather than URLs. A malicious bazaar package author can include an iframe with a srcdoc attribute containing embedded scripts in their README. When other users view the package in SiYuan's marketplace UI, the payload executes in the Electron context with full application privileges, enabling arbitrary code execution on the user's machine. This issue has been fixed in version 3.6.4.

Rincian

Terbit di NVD

17 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

5.4 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

EPSS (30 hari)

0,38% peluang dieksploitasi; lebih tinggi dari 29,7% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/siyuan-note/siyuan/commit/b382f50e1880ed996364509de5a10a72d7409428 patch
• https://github.com/advisories/GHSA-4663-4mpg-879v advisory pihak ketiga
• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-8q5w-mmxf-48jg exploit · advisory pihak ketiga
• https://github.com/siyuan-note/siyuan/releases/tag/v3.6.4 release notes