CVE-2026-42371

MEDIUMNVD 5.15.1—

5.1

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

CVSS v3: 5.1
EG Score: 5.1(high)
EPSS: 0.2%
KEV: Not listed

Published

April 27, 2026

Last Modified

May 18, 2026

References (3)

cve@mitrehttps://github.com/uriparser/uriparser/pull/298
cve@mitrehttps://uriparser.github.io
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2026/04/27/2

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
redhat	uriparser-main-1.0.1-1.hum1	2026-04-30	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-197

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Red HatRHSA-2026:12430MODERATE2026-04-27
RHSA-2026:12430 — Moderate

Data Freshness Timeline

(refreshed 7× in last 7d / 12× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 15:31 UTCEG score recompute
2026-05-20 15:31 UTCVendor advisory
2026-05-20 15:31 UTCGHSA enrichment
2026-05-20 11:22 UTCepss_batch
2026-05-20 11:22 UTCepss_batch

Frequently asked(5)

What is CVE-2026-42371?

CVE-2026-42371 is a medium vulnerability published on April 27, 2026. uriparser before 1.0.1 has numeric truncation in text range comparison, if an application accepts URIs with a length in gigabytes.

When was CVE-2026-42371 disclosed?

CVE-2026-42371 was first published in the National Vulnerability Database on April 27, 2026, with the most recent update on May 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-42371 actively exploited?

CVE-2026-42371 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-42371?

CVE-2026-42371 has a CVSS v3 base score of 5.1 (NVD).

How do I remediate CVE-2026-42371?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42371, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-42371

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