What is CVE-2019-19381?

CVE-2019-19381 is a medium-severity vulnerability in Abacus, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-03-11.

How severe is CVE-2019-19381?

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

XSS in Abacus

CVE-2019-19381

oauth/oauth2/v1/saml/ in Abacus OAuth Login 2019_01_r4_20191021_0000 before prior to R4 (20.11.2019 Hotfix) allows Reflected Cross Site Scripting (XSS) via an error message.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2020-03-11 · 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 (53.6th percentile), scored 2026-10-25.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.6% 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

Abacus — versions 2019-11-20

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.compass-security.com/en/research/advisories/ (Third Party Advisory)
www.compass-security.com/fileadmin/Datein/Research/Advisories/CSNC-2019-024_Aba… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2019-19381?: CVE-2019-19381 is a medium-severity vulnerability in Abacus, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-03-11.
How severe is CVE-2019-19381?: Medium severity. CVSS v3 base score is 6.1 out of 10.