CVE-2026-41894
CVE-2026-41894 is a high-severity vulnerability with a CVSS 4.0 base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.
Key facts
- Severity: High (CVSS 4.0 base score 7.1)
- EPSS exploit prediction: 0% (23rd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-25626
- Weakness: CWE-22
- Published:
- Last modified:
Description
SiYuan is an open-source personal knowledge management system. Prior to 3.6.5, the fix for CVE-2026-30869 only added a denylist check (IsSensitivePath) but did not address the root cause — a redundant url.PathUnescape() call in serveExport(). An authenticated attacker can use double URL encoding (%252e%252e) to traverse directories and read arbitrary workspace files including the full SQLite database (siyuan.db), kernel log, and all user documents. This vulnerability is fixed in 3.6.5.
Frequently asked questions
- What is CVE-2026-41894?
- SiYuan is an open-source personal knowledge management system. Prior to 3.6.5, the fix for CVE-2026-30869 only added a denylist check (IsSensitivePath) but did not address the root cause — a redundant url.PathUnescape() call in serveExport(). An authenticated attacker can use double URL encoding (%252e%252e) to traverse directories and read arbitrary workspace files including the full SQLite database (siyuan.db), kernel log, and all user documents. This vulnerability is fixed in 3.6.5.
- How severe is CVE-2026-41894?
- CVE-2026-41894 has a CVSS 4.0 base score of 7.1, rated high severity.
- Is CVE-2026-41894 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-41894?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-41894 have an EU (EUVD) identifier?
- Yes. CVE-2026-41894 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25626.
- When was CVE-2026-41894 published?
- CVE-2026-41894 was published on 2026-04-24 and last updated on 2026-06-17.
References
- https://github.com/siyuan-note/siyuan/commit/bb481e1290c4a34255652ede85a546504505d2a7
- https://github.com/siyuan-note/siyuan/releases/tag/v3.6.5
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hjh7-r5w8-5872
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