What is CVE-2019-20483?

CVE-2019-20483 is a medium-severity vulnerability in Vikisolutions Vera, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-01-05.

How severe is CVE-2019-20483?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Vikisolutions Vera

CVE-2019-20483

An issue was discovered in Viki Vera 4.9.1.26180. An attacker could set a user's last name to an XSS Payload, and read another user's cookie and use that to login to the application.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-01-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (43.7th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 43.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000

Affected products

Vikisolutions Vera — versions 4.9.1.26180

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.gosecure.net/blog/2020/12/15/vera-stored-xss-improper-access-control/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2019-20483?: CVE-2019-20483 is a medium-severity vulnerability in Vikisolutions Vera, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-01-05.
How severe is CVE-2019-20483?: Medium severity. CVSS v3 base score is 5.4 out of 10.