What is CVE-2019-16179?

CVE-2019-16179 is a medium-severity vulnerability in Limesurvey, classified under Improper Certificate Validation. CVSS score: 5.3/10. Published 2019-09-09.

How severe is CVE-2019-16179?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Limesurvey

CVE-2019-16179

Limesurvey before 3.17.14 does not enforce SSL/TLS usage in the default configuration.

Vulnerability class: Improper Certificate Validation

Published 2019-09-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.010 (61.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 61.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Limesurvey

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

www.limesurvey.org/limesurvey-updates/2188-limesurvey-3-17-14-build-190902-rele… (Release Notes, Vendor Advisory)
github.com/LimeSurvey/LimeSurvey/commit/5870fd1037058bc4e43cccf893b576c72293371e (Patch, Third Party Advisory, Release Notes)

Frequently asked questions

What is CVE-2019-16179?: CVE-2019-16179 is a medium-severity vulnerability in Limesurvey, classified under Improper Certificate Validation. CVSS score: 5.3/10. Published 2019-09-09.
How severe is CVE-2019-16179?: Medium severity. CVSS v3 base score is 5.3 out of 10.