Medium severity · published Apr 27, 2026
CVE-2026-42371
uriparser before 1.0.1 has numeric truncation in text range comparison, if an application accepts URIs with a length in gigabytes
5.1
CVSS
0.2%
EPSS
No
On KEV
Description
uriparser before 1.0.1 has numeric truncation in text range comparison, if an application accepts URIs with a length in gigabytes.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UR
uriparser · uriparser
before 1.0.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-42371
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-42371
Issue Tracking
https://github.com/uriparser/uriparser/pull/298
Product
https://uriparser.github.io
Mailing List
http://www.openwall.com/lists/oss-security/2026/04/27/2
More from uriparser
5.3
CVE-2026-44928
In uriparser before 1.0.2, the function family EqualsUri can misclassify two unequal URIs as equal
5.3
CVE-2026-44927
In uriparser before 1.0.2, there is pointer difference truncation to int in various places