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CVE-2026-25539 SiYuan has Arbitrary File Write via /api/file/copyFile leading to RCE

🗓️ 04 Feb 2026 21:39:12Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 45 Views

CVE-2026-25539 SiYuan allowed authenticated users to write files to arbitrary locations using the copyFile endpoint, enabling remote code execution.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-25539
4 Feb 202621:39
–attackerkb
circl
Circl
CVE-2026-25539
28 Jan 202613:42
–circl
cnnvd
CNNVD
SiYuan path traversal vulnerability
4 Feb 202600:00
–cnnvd
cve
CVE
CVE-2026-25539
4 Feb 202621:39
–cve
euvd
EUVD
EUVD-2026-5331
4 Feb 202621:39
–euvd
github
Github Security Blog
SiYuan has Arbitrary File Write via /api/file/copyFile leading to RCE
29 Jan 202615:15
–github
mend
Mend
CVE-2026-25539
4 Feb 202621:39
–mend
nvd
NVD
CVE-2026-25539
4 Feb 202622:16
–nvd
osv_cve
osv_cve
CVE-2026-25539 SiYuan has Arbitrary File Write via /api/file/copyFile leading to RCE
4 Feb 202621:39
–osv_cve
osv_ghsa
osv_ghsa
GHSA-C4JR-5Q7W-F6R9 SiYuan has Arbitrary File Write via /api/file/copyFile leading to RCE
29 Jan 202615:15
–osv_ghsa
Rows per page
[
  {
    "vendor": "siyuan-note",
    "product": "siyuan",
    "versions": [
      {
        "version": "< 3.5.5",
        "status": "affected"
      }
    ]
  }
]

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