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CVE-2018-19198

30
FAUCET Score

CVE-2018-19198 is a critical out-of-bounds write vulnerability affecting uriparser versions prior to 0.9.0, specifically within the UriQuery.c file due to mishandling of the '&' character in uriComposeQuery* or uriComposeQueryEx* functions. This flaw impacts Debian Linux and uriparser_project uriparser. With a CVSS score of 9.8, it presents a severe risk, allowing unauthenticated attackers to achieve high confidentiality, integrity, and availability impacts over the network with low attack complexity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.9.0CPE matchmatch criteria
cpe:2.3:a:uriparser_project:uriparser:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.37%
Probability of exploitation in next 30 days
EPSS Percentile
82.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0237 is in the 72nd percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: uriparser-0:0.7.5-10.el7
View patch

Vendor Advisories (1)

redhatCVE-2018-19198Moderate

uriparser: Out-of-bounds write via uriComposeQuery* or uriComposeQueryEx* function

Sep 23, 2018

References

access.redhat.com / errata/RHSA-2019:2280
github.com / uriparser/uriparser/blob/uriparser-0.9.0/ChangeLog
Release Notes
github.com / uriparser/uriparser/commit/864f5d4c127def386dd5cc926ad96934b297f04e
Patch
lists.debian.org / debian-lts-announce/2018/11/msg00019.html
Third Party Advisory