CVE-2021-28977

MEDIUM 4.8CVE-2021-28977 · Published 23/06/2021 · updated 17/06/2026

In short

CVE-2021-28977 is a MEDIUM (CVSS 4.8) vulnerability affecting getsimplecms (get-simple).
Chance of exploitation in the next 30 days (EPSS): 0.51%, higher than 43.2% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
getsimplecms get-simple	`≤ 3.3.15`	No fix yet

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,

References

GetSimpleCMS/GetSimpleCMS · Third Party Advisory

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Package

Affected versions

Patched versions

getsimplecms

get-simple

≤ 3.3.15

No fix yet

More vulnerabilities in getsimplecms

See all →