Vulnerability · Published Apr 27, 2026 · Assigned by mitre
CVE-2026-42371
Medium 5.1
In plain English
A medium-severity security flaw in uriparser from uriparser. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.1Medium
Exploit odds (30 days)0.2%top 93.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
uriparser before 1.0.1 has numeric truncation in text range comparison, if an application accepts URIs with a length in gigabytes.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.23 | php85 | 8.5.6-r0 | ALPINE-CVE-2026-42371 |
| Alpine:v3.24 | php85 | 8.5.6-r0 | ALPINE-CVE-2026-42371 |
| Debian:12 | uriparser | no fix listed | DEBIAN-CVE-2026-42371 |
| Debian:13 | uriparser | no fix listed | DEBIAN-CVE-2026-42371 |
| Debian:14 | uriparser | 1.0.1+dfsg-1 | DEBIAN-CVE-2026-42371 |
| Ubuntu:25.10 | uriparser | no fix listed | UBUNTU-CVE-2026-42371 |
| Ubuntu:26.04:LTS | uriparser | no fix listed | UBUNTU-CVE-2026-42371 |
| Ubuntu:26.10 | uriparser | no fix listed | UBUNTU-CVE-2026-42371 |
Affected products (as reported)
Weakness: CWE-197 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H