CVE-2021-47965

WordPress Plugin WP Super Edit 2.5.4 and earlier contains an unrestricted file upload vulnerability in the FCKeditor component that allows attackers to upload dangerous file types without validation. Attackers can upload arbitrary files through the filemanager upload endpoint to achieve remote code execution and complete system compromise.

CVSS v4.0

9.3 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.60% chance of exploitation in the next 30 days, 46th percentile

Published

2026-05-15

Updated

2026-05-25

Proof-of-concept exploits (1)

• https://www.exploit-db.com/exploits/49839

References

• CVE Record
• NVD entry

Related

• CVE-2021-47964
• CVE-2021-47966
• CVE-2021-47963
• CVE-2021-47967
• CVE-2021-47962
• CVE-2021-47968