CVE-2020-18657

Public Exploit

Description

Cross Site Scripting (XSS) vulnerability in GetSimpleCMS <= 3.3.15 in admin/changedata.php via the redirect_url parameter and the headers_sent function.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.38%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory seebug.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/GetSimpleCMS/GetSimpleCMS/issues/1310 third party advisory exploit
https://github.com/LoRexxar/CVE_Request/blob/master/getsimplecms%20v3.3.15/getsimplecms_before_v3.3.15.md third party advisory release notes
https://www.seebug.org/vuldb/ssvid-97929 third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-18657?
CVE-2020-18657 has been scored as a medium severity vulnerability.
How to fix CVE-2020-18657?
To fix CVE-2020-18657, 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-2020-18657 being actively exploited in the wild?
It is possible that CVE-2020-18657 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.