{"cve":"CVE-2026-34448","nvd":{"published":"2026-03-31T22:16:19.657","modified":"2026-07-24T21:10:00.143","status":"Analyzed","description":"SiYuan is a personal knowledge management system. Prior to version 3.6.2, an attacker who can place a malicious URL in an Attribute View mAsse field can trigger stored XSS when a victim opens the Gallery or Kanban view with “Cover From -> Asset Field” enabled. The vulnerable code accepts arbitrary http(s) URLs without extensions as images, stores the attacker-controlled string in coverURL, and injects it directly into an <img src=\"...\"> attribute without escaping. In the Electron desktop client, the injected JavaScript executes with nodeIntegration enabled and contextIsolation disabled, so the XSS reaches arbitrary OS command execution under the victim’s account. This issue has been patched in version 3.6.2.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","score":9.0},"cwes":["CWE-79","CWE-94"],"references":["https://github.com/siyuan-note/siyuan/issues/17246","https://github.com/siyuan-note/siyuan/releases/tag/v3.6.2","https://github.com/siyuan-note/siyuan/security/advisories/GHSA-rx4h-526q-4458"],"products":["b3log:siyuan"],"source":"nvd","synced_at":"2026-10-19T22:28:18.033120106+00:00"},"epss":{"cve":"CVE-2026-34448","score":0.00498,"percentile":0.42713,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-rx4h-526q-4458","url":"https://osv.dev/vulnerability/GHSA-rx4h-526q-4458","summary":"SiYuan: Stored XSS in Attribute View Gallery/Kanban Cover Rendering Allows Arbitrary Command Execution in Desktop Client","modified":"2026-06-25T23:11:38.353107897Z","packages":[{"ecosystem":"Go","name":"github.com/siyuan-note/siyuan/kernel","purl":"pkg:golang/github.com/siyuan-note/siyuan/kernel","ranges":["<3.6.2"],"fixed":["3.6.2"]}]},{"id":"GO-2026-5644","url":"https://osv.dev/vulnerability/GO-2026-5644","summary":"SiYuan: Stored XSS in Attribute View Gallery/Kanban Cover Rendering Allows Arbitrary Command Execution in Desktop Client in github.com/siyuan-note/siyuan/kernel","modified":"2026-06-25T23:01:23.213320158Z","packages":[{"ecosystem":"Go","name":"github.com/siyuan-note/siyuan/kernel","purl":"pkg:golang/github.com/siyuan-note/siyuan/kernel","ranges":["all versions"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}