CVE-2021-3745

Name: CVE-2021-3745
Creator: NVD / NIST
Published: 2021-10-28T17:15:07.467+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.6/10EPSS 1.07%

Last modified Jun 17, 2026

CVE-2021-3745 is a medium-severity vulnerability rated 6.6/10 on the CVSS scale. flatcore-cms is vulnerable to Unrestricted Upload of File with Dangerous Type. EPSS estimates a 1.07% chance of exploitation in the next 30 days.

Description

flatcore-cms is vulnerable to Unrestricted Upload of File with Dangerous Type

Metrics

CVSS 3.1

6.6/10

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.07%

60.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Flatcore	Flatcore-Cms	< 2.1.0

References

https://github.com/flatcore/flatcore-cms/commit/5cc3937b6bc38293ec921a5cf00018b48b668dc6Patch, Third Party Advisory
https://huntr.dev/bounties/7879ab3d-8018-402a-aa0b-131bdbd1966cExploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/flatcore/flatcore-cms/commit/5cc3937b6bc38293ec921a5cf00018b48b668dc6Patch, Third Party Advisory
https://huntr.dev/bounties/7879ab3d-8018-402a-aa0b-131bdbd1966cExploit, Issue Tracking, Patch, Third Party Advisory

Timeline

Published: Oct 28, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3745?

flatcore-cms is vulnerable to Unrestricted Upload of File with Dangerous Type

How severe is CVE-2021-3745?

CVE-2021-3745 has a CVSS score of 6.6/10 (MEDIUM severity). The EPSS model estimates a 1.07% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3745?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-3745?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST