What is CVE-2018-19199?

CVE-2018-19199 is a critical-severity vulnerability in Uriparser Project, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2018-11-12.

How severe is CVE-2018-19199?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Integer overflow in Uriparser Project

CVE-2018-19199

An issue was discovered in uriparser before 0.9.0. UriQuery.c allows an integer overflow via a uriComposeQuery* or uriComposeQueryEx* function because of an unchecked multiplication.

Vulnerability class: Integer Overflow

Published 2018-11-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.023 (83.3th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000

Affected products

Uriparser Project
Debian Linux — versions 8.0

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

lists.debian.org/debian-lts-announce/2018/11/msg00019.html (mailing-list, Third Party Advisory)
github.com/uriparser/uriparser/blob/uriparser-0.9.0/ChangeLog (Patch, Third Party Advisory)
github.com/uriparser/uriparser/commit/f76275d4a91b28d687250525d3a0c5509bbd666f (Patch, Third Party Advisory)
access.redhat.com/errata/RHSA-2019:2280 (vendor-advisory)

Frequently asked questions

What is CVE-2018-19199?: CVE-2018-19199 is a critical-severity vulnerability in Uriparser Project, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2018-11-12.
How severe is CVE-2018-19199?: Critical severity. CVSS v3 base score is 9.8 out of 10.