{"id":"CVE-2026-93751","aliases":["AZL-103436","DEBIAN-CVE-2026-93751","EUVD-2026-83256","GHSA-7g43-p94j-qr58","UBUNTU-CVE-2026-93751"],"status":"published","title":"uri-js through 4.4.1 Improper UTF-8 Decoding via pctDecChars","description":"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.","severity":{"version":"4.0","score":6.9,"vector":"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.004,"percentile":0.34508,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-176"],"published":"2026-09-18T17:51:36Z","modified":"2026-11-05T05:36:30Z","affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"js-jquery","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"3.5.0-4"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"node-uri-js","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.4.0+dfsg-10","4.4.0+dfsg-8","4.4.0+dfsg-9"]},{"source":"osv","ecosystem":"Debian:13","package":"node-uri-js","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.4.0+dfsg-10","4.4.0+dfsg-8","4.4.0+dfsg-9"]},{"source":"osv","ecosystem":"Debian:14","package":"node-uri-js","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.4.0+dfsg-10","4.4.0+dfsg-8","4.4.0+dfsg-9"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"node-uri-js","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2.2+dfsg-4","4.2.2+dfsg-5"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"node-uri-js","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.4.0+dfsg-5","4.4.0+dfsg-7"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"node-uri-js","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.4.0+dfsg-8"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"node-uri-js","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.4.0+dfsg-9","4.4.0+dfsg-10"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"node-uri-js","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.4.0+dfsg-8","4.4.0+dfsg-9"]}],"products":[{"vendor":"garycourt","product":"uri-js"}],"references":[{"url":"https://github.com/garycourt/uri-js/issues/106","tags":["issue-tracking","report"]},{"url":"https://github.com/garycourt/uri-js","tags":["product","report"]},{"url":"https://github.com/garycourt/uri-js/blob/a1acf730b4bba3f1097c9f52e7d9d3aba8cdcaae/src/uri.ts#L103-L141","tags":["technical-description","report"]},{"url":"https://www.vulncheck.com/advisories/uri-js-through-4.4.1-improper-utf-8-decoding-via-pctdecchars","tags":["third-party-advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93751","tags":["web"]},{"url":"https://github.com/advisories/GHSA-7g43-p94j-qr58"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-93751","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-93751","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93751","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-93751","title":"uri-js through 4.4.1 Improper UTF-8 Decoding via pctDecChars","description":"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.","status":"published","published":"2026-09-18T17:51:36.332Z","modified":"2026-09-24T14:23:10.183Z","cvss":[{"version":"4.0","score":6.9,"vector":"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","level":"medium","assessor":"cna"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-176"],"updated_at":"2026-11-02T14:19:54.122945Z"}],"euvd":[{"id":"EUVD-2026-83256","description":"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.","status":"published","published":"2026-09-18T17:51:36Z","modified":"2026-09-24T14:23:10Z","cvss":[{"version":"4.0","score":6.9,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T17:27:57.035497Z"}],"ghsa":[{"id":"GHSA-7g43-p94j-qr58","title":"uri-js through 4.4.1 contains an improper UTF-8 decoding vulnerability in pctDecChars() that...","description":"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.","status":"published","published":"2026-09-18T18:31:44Z","modified":"2026-09-18T18:32:05Z","cvss":[{"version":"4.0","score":6.9,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-176"],"updated_at":"2026-11-02T15:12:11.358904Z"}],"nvd":[{"id":"CVE-2026-93751","description":"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.","status":"published","published":"2026-09-18T18:18:34.177Z","modified":"2026-09-22T20:25:55.87Z","cvss":[{"version":"4.0","score":6.9,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-176"],"updated_at":"2026-11-02T14:12:50.043898Z"}],"osv":[{"id":"DEBIAN-CVE-2026-93751","description":"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.","status":"published","published":"2026-09-18T18:18:34.177Z","modified":"2026-09-23T08:47:27.608301346Z","cvss":[{"version":"4.0","score":6.9,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"updated_at":"2026-11-02T15:46:06.846102Z"},{"id":"UBUNTU-CVE-2026-93751","description":"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.","status":"published","published":"2026-09-18T18:18:00Z","modified":"2026-10-17T13:01:18.641663832Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"},{"version":"4.0","score":6.9,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T16:57:44.071534Z"},{"id":"AZL-103436","title":"CVE-2026-93751 affecting package js-jquery 3.5.0-4","description":"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.","status":"published","published":"2026-09-18T18:18:34Z","modified":"2026-11-05T05:36:30Z","updated_at":"2026-11-05T16:41:17.528763Z"}]}}