What is CVE-2021-28060?

CVE-2021-28060 is a medium-severity vulnerability in Group-Office Group Office, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.3/10. Published 2021-04-14.

How severe is CVE-2021-28060?

Medium severity. CVSS v3 base score is 5.3 out of 10.

SSRF in Group-Office Group Office

CVE-2021-28060

A Server-Side Request Forgery (SSRF) vulnerability in Group Office 6.4.196 allows a remote attacker to forge GET requests to arbitrary URLs via the url parameter to group/api/upload.php.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2021-04-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.014 (72.1th percentile), scored 2026-10-06.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Group-Office Group Office — versions 6.4.196

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

fatihhcelik.blogspot.com/2020/12/group-office-crm-ssrf.html (Exploit, Third Party Advisory)
fatihhcelik.github.io/posts/Group-Office-CRM-SSRF/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-28060?: CVE-2021-28060 is a medium-severity vulnerability in Group-Office Group Office, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.3/10. Published 2021-04-14.
How severe is CVE-2021-28060?: Medium severity. CVSS v3 base score is 5.3 out of 10.