CVE-2021-28977

Description

Cross Site Scripting vulnerability in GetSimpleCMS 3.3.16 in admin/upload.php by adding comments or jpg and other file header information to the content of xla, pages, and gzip files,

Category

4.8
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.24%
Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/GetSimpleCMS/GetSimpleCMS/issues/1336 third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-28977?
CVE-2021-28977 has been scored as a medium severity vulnerability.
How to fix CVE-2021-28977?
To fix CVE-2021-28977, 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-2021-28977 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-28977 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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