CVE-2020-21359

Public Exploit

Description

An arbitrary file upload vulnerability in the Template Upload function of Maccms10 allows attackers bypass the suffix whitelist verification to execute arbitrary code via adding a character to the end of the uploaded file's name.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.11% Top 25%
Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/magicblack/maccms10/issues/80 third party advisory issue tracking exploit

Frequently Asked Questions

What is the severity of CVE-2020-21359?
CVE-2020-21359 has been scored as a critical severity vulnerability.
How to fix CVE-2020-21359?
To fix CVE-2020-21359, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-21359 being actively exploited in the wild?
It is possible that CVE-2020-21359 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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