What is CVE-2020-35419?

CVE-2020-35419 is a medium-severity vulnerability in Group-Office Group Office, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-04-14.

How severe is CVE-2020-35419?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Group-Office Group Office

CVE-2020-35419

Cross Site Scripting (XSS) in Group Office CRM 6.4.196 via the SET_LANGUAGE parameter.

Vulnerability class: XSS (Cross-Site Scripting)

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

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (49.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Group-Office Group Office — versions 6.4.196

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

fatihhcelik.github.io/posts/Group-Office-CRM-Stored-XSS-via-SVG-File/ (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2020-35419?: CVE-2020-35419 is a medium-severity vulnerability in Group-Office Group Office, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-04-14.
How severe is CVE-2020-35419?: Medium severity. CVSS v3 base score is 6.1 out of 10.