Vulnerability in Garycourt Uri-Js
CVE-2026-93751
uri-js through 4.4.1 contains an improper UTF-8 decoding vulnerability in pctDecChars() that decodes invalid and overlong percent-encoded sequences into ASCII metacharacters. Attackers can craft percent-encoded payloads to bypass platform decoder validation and inject path traversal or CRLF sequences that downstream consumers process without filtering.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
Affected products
Weakness classification (CWE)
References
- disclosure@vulncheck.com (issue-tracking)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (technical-description)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-93751?
- CVE-2026-93751 is a medium-severity vulnerability in Garycourt Uri-Js, classified under CWE-176. CVSS score: 6.5/10. Published 2026-09-18.
- How severe is CVE-2026-93751?
- Medium severity. CVSS v3 base score is 6.5 out of 10.