What is CVE-2019-18936?

CVE-2019-18936 is a high-severity vulnerability in Bloq Univalue, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2020-03-21.

How severe is CVE-2019-18936?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Bloq Univalue

CVE-2019-18936

UniValue::read() in UniValue before 1.0.5 allow attackers to cause a denial of service (the class internal data reaches an inconsistent state) via input data that triggers an error.

Published 2020-03-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.016 (74.6th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 74.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Bloq Univalue

Weakness classification (CWE)

CWE-674 — Uncontrolled Recursion

References

github.com/jgarzik/univalue/compare/v1.0.4...v1.0.5 (Third Party Advisory, Release Notes)
github.com/jgarzik/univalue/pull/58 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2019-18936?: CVE-2019-18936 is a high-severity vulnerability in Bloq Univalue, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2020-03-21.
How severe is CVE-2019-18936?: High severity. CVSS v3 base score is 7.5 out of 10.