{"id":"CVE-2026-93751","title":"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","summary":"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 platfor…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","cwe":["CWE-176","CWE-22"],"vendor":"garycourt","product":"uri-js","affected":["uri-js <= 4.4.1"],"published":"2026-09-18","updated":"2026-09-22","sourceUpdated":"2026-09-22T20:25:55.870","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93751","references":[{"url":"https://github.com/garycourt/uri-js","label":"disclosure@vulncheck.com"},{"url":"https://github.com/garycourt/uri-js/blob/a1acf730b4bba3f1097c9f52e7d9d3aba8cdcaae/src/uri.ts#L103-L141","label":"disclosure@vulncheck.com"},{"url":"https://github.com/garycourt/uri-js/issues/106","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/uri-js-through-4.4.1-improper-utf-8-decoding-via-pctdecchars","label":"disclosure@vulncheck.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93751.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-93751"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2537856"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93751"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93751"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.004,"epssPercentile":0.34058,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-21T16:28:54.072164Z"},"ingestedAt":"2026-09-18T18:47:53.269Z","slug":"CVE-2026-93751","body":"## Overview\n\nuri-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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Hardened Images · no fix planned: Red Hat Hardened Images · updated 2026-09-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93751.json)","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}