What is CVE-2020-28943?

CVE-2020-28943 is a medium-severity vulnerability in Open-Xchange Appsuite, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.5/10. Published 2021-04-30.

How severe is CVE-2020-28943?

Medium severity. CVSS v3 base score is 6.5 out of 10.

SSRF in Open-Xchange Appsuite

CVE-2020-28943

OX App Suite 7.10.4 and earlier allows SSRF via a snippet.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2021-04-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.012 (67.0th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Open-Xchange Appsuite

Weakness classification (CWE)

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

References

open-xchange.com (Vendor Advisory)
packetstormsecurity.com/files/162406/OX-App-Suite-OX-Guard-SSRF-DoS-Cross-Site-… (Exploit, VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2020-28943?: CVE-2020-28943 is a medium-severity vulnerability in Open-Xchange Appsuite, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.5/10. Published 2021-04-30.
How severe is CVE-2020-28943?: Medium severity. CVSS v3 base score is 6.5 out of 10.