{"id":"UBUNTU-CVE-2026-93751","details":"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.","modified":"2026-09-21T21:40:58.983646904Z","published":"2026-09-21T00:00:00Z","upstream":["CVE-2026-93751"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-93751"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-93751"},{"type":"REPORT","url":"https://github.com/garycourt/uri-js/issues/106"},{"type":"REPORT","url":"https://github.com/garycourt/uri-js"},{"type":"REPORT","url":"https://github.com/garycourt/uri-js/blob/a1acf730b4bba3f1097c9f52e7d9d3aba8cdcaae/src/uri.ts#L103-L141"},{"type":"REPORT","url":"https://www.vulncheck.com/advisories/uri-js-through-4.4.1-improper-utf-8-decoding-via-pctdecchars"}],"affected":[{"package":{"name":"node-uri-js","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/node-uri-js?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2.2+dfsg-4","4.2.2+dfsg-5"],"ecosystem_specific":{"binaries":[{"binary_name":"node-uri-js","binary_version":"4.2.2+dfsg-5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-93751.json"}},{"package":{"name":"node-uri-js","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/node-uri-js?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.4.0+dfsg-5","4.4.0+dfsg-7"],"ecosystem_specific":{"binaries":[{"binary_name":"node-uri-js","binary_version":"4.4.0+dfsg-7"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-93751.json"}},{"package":{"name":"node-uri-js","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/node-uri-js?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.4.0+dfsg-8"],"ecosystem_specific":{"binaries":[{"binary_name":"node-uri-js","binary_version":"4.4.0+dfsg-8"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-93751.json"}},{"package":{"name":"node-uri-js","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/node-uri-js?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.4.0+dfsg-8","4.4.0+dfsg-9"],"ecosystem_specific":{"binaries":[{"binary_name":"node-uri-js","binary_version":"4.4.0+dfsg-9"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-93751.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}