What is CVE-2019-3912?

CVE-2019-3912 is a medium-severity vulnerability in Labkey Server, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2019-01-30.

How severe is CVE-2019-3912?

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

Is CVE-2019-3912 known to be exploited?

8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Open Redirect in Labkey Server

CVE-2019-3912

An open redirect vulnerability in LabKey Server Community Edition before 18.3.0-61806.763 via the /__r1/ returnURL parameter allows an unauthenticated remote attacker to redirect users to arbitrary web sites.

Vulnerability class: Open Redirect

Published 2019-01-30 · 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: 0.048 (91.7th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 91.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.048 · newest: 0.048 · change: 0.000

Affected products

Labkey Server
Tenable Labkey Server Community Edition — versions Versions before 18.3.0-61806.763

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

Public proof-of-concept exploits

References

www.tenable.com/security/research/tra-2019-03 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2019-3912?: CVE-2019-3912 is a medium-severity vulnerability in Labkey Server, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2019-01-30.
How severe is CVE-2019-3912?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2019-3912 known to be exploited?: 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.