CVE-2021-33990
CVSS v3
9.8
CRITICAL
EPSS Score
11.9 %
exploit probability, as of 2026-10-05
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Liferay Portal 6.2.5 allows Command=FileUpload&Type=File&CurrentFolder=/ requests when frmfolders.html exists. NOTE: The vendor disputes this issue because the exploit reference link only shows frmfolders.html is accessible and does not demonstrate how an unauthorized user can upload a file.
Technical details
- Published
- 2023-04-16
- Exploit-DB
- EDB-51244
Frequently asked questions
What is CVE-2021-33990?
Liferay Portal 6.2.5 allows Command=FileUpload&Type=File&CurrentFolder=/ requests when frmfolders.html exists. NOTE: The vendor disputes this issue because the exploit reference link only shows frmfolders.html is accessible and does not demonstrate how an unauthorized user can upload a file.
Is CVE-2021-33990 actively exploited?
Active exploitation of CVE-2021-33990 has not been confirmed. Its EPSS score was 11.9% on 2026-10-05, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-33990?
CVE-2021-33990 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2021-33990 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.
No credit card required · 50 free checks/month · Free API key
Other 2021 vulnerabilities worth triaging
Ranked by exploit probability (EPSS).