CVE-2021-28977

low-risk

Published 2021-06-23

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,

Do I need to act?

0.24% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 4.8/10 Medium

NETWORK / LOW complexity

Affected Products (1)

Getsimplecms

Affected Vendors

Get-Simple

References (2)

Third Party Advisory https://github.com/GetSimpleCMS/GetSimpleCMS/issues/1336

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low-risk

Severity 19/34 · Moderate

Exploitability 1/34 · Minimal

Exposure 5/34 · Minimal