uriparser up to 1.0.0 URI numeric truncation error

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability was found in uriparser up to 1.0.0. It has been declared as problematic. Affected by this issue is some unknown functionality of the component URI Handler. The manipulation results in numeric truncation error. This vulnerability was named CVE-2026-42371. The attack needs to be approached locally. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in uriparser up to 1.0.0. Affected is some unknown processing of the component URI Handler. The manipulation with an unknown input leads to a numeric truncation error vulnerability. CWE is classifying the issue as CWE-197. Truncation errors occur when a primitive is cast to a primitive of a smaller size and data is lost in the conversion. This is going to have an impact on availability. CVE summarizes:

uriparser before 1.0.1 has numeric truncation in text range comparison, if an application accepts URIs with a length in gigabytes.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-42371 since 04/27/2026. The exploitability is told to be difficult. Local access is required to approach this attack. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 310600 (Linux Distros Unpatched Vulnerability : CVE-2026-42371), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.0.1 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (310600). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.2

VulDB Base Score: 2.5
VulDB Temp Score: 2.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.1
NVD Vector: 🔒

CNA Base Score: 5.1
CNA Vector (MITRE): 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Numeric truncation error
CWE: CWE-197 / CWE-189
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 310600
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-42371

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: uriparser 1.0.1
Patch: github.com

Timelineinfo

04/27/2026 Advisory disclosed
04/27/2026 +0 days CVE reserved
04/27/2026 +0 days VulDB entry created
05/18/2026 +21 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-42371 (🔒)
GCVE (CVE): GCVE-0-2026-42371
GCVE (VulDB): GCVE-100-359778

Entryinfo

Created: 04/27/2026 09:37
Updated: 05/18/2026 20:16
Changes: 04/27/2026 09:37 (63), 04/29/2026 01:33 (2), 05/18/2026 20:16 (11)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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