{"id":"CVE-2026-45822","aliases":["AZL-92075","CLSA-2026-1788255041","EUVD-2026-40267","GHSA-vcc3-ghjq-m6fr","UBUNTU-CVE-2026-45822"],"status":"published","title":"decode-uri-component: Denial of service via exponential decoding of malformed percent-encoded input","description":"decode-uri-component through 0.4.1 is vulnerable to denial of service. The decode() function splits input on '%' producing N tokens and calls decodeComponents(), exhibiting super-linear parsing time: 200 '%ab' tokens takes approximately 0.7s, 700 tokens approximately 6s, and 1400 tokens approximately 33s. An attacker can cause significant CPU consumption and event-loop blocking via crafted input.","severity":{"version":"4.0","score":6.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/S:N/AU:Y/R:U/V:D/RE:M/U:Amber","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00507,"percentile":0.43532,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1176","CWE-400","CWE-405","CWE-407"],"published":"2026-06-30T08:05:36Z","modified":"2026-11-05T05:36:30Z","fixes":[{"ecosystem":"npm","package":"decode-uri-component","fixed_in":["0.5.0"],"sources":["ghsa","osv"]},{"ecosystem":"TuxCare:npm","package":"decode-uri-component","fixed_in":["0.2.2-tuxcare.1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"decode-uri-component","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.4.2"},{"fixed":"0.5.0"}]}]},{"source":"osv","ecosystem":"Azure Linux:3","package":"js-jquery","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"3.5.0-4"}]}]},{"source":"osv","ecosystem":"TuxCare:npm","package":"decode-uri-component","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.2.2-tuxcare.0"},{"fixed":"0.2.2-tuxcare.1"}]}],"versions":["0.2.2"]},{"source":"osv","ecosystem":"npm","package":"decode-uri-component","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.5.0"}]}]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"node-source-map-resolve","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.0+~cs2.7.2-2","0.6.0+~cs2.7.3-2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"node-source-map-resolve","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.0+~cs2.7.3-2"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"node-source-map-resolve","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.0+~cs2.7.3-2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"node-source-map-resolve","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.0+~cs2.7.3-2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"node-source-map-resolve","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.0+~cs2.7.3-2"]}],"products":[{"vendor":"samverschueren","product":"decode-uri-component"}],"references":[{"url":"https://github.com/SamVerschueren/decode-uri-component/blob/00662938dc7c6241547ae8abce7785cc13ffd3f6/index.js","tags":["web","report"]},{"url":"https://github.com/SamVerschueren/decode-uri-component/commit/fa479dafeede7bedf04e5c89aa78f2a78c664005","tags":["fix","web","report"]},{"url":"https://www.npmjs.com/package/decode-uri-component","tags":["web","report"]},{"url":"https://github.com/SamVerschueren/decode-uri-component/security/advisories/GHSA-vcc3-ghjq-m6fr","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45822","tags":["web","advisory"]},{"url":"https://github.com/SamVerschueren/decode-uri-component/releases/tag/v0.5.0","tags":["web"]},{"url":"https://github.com/advisories/GHSA-vcc3-ghjq-m6fr"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45822.json","tags":["advisory"]},{"url":"https://github.com/SamVerschueren/decode-uri-component","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2026-45822","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-45822","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-45822","description":"decode-uri-component through 0.4.1 is vulnerable to denial of service. The decode() function splits input on '%' producing N tokens and calls decodeComponents(), exhibiting super-linear parsing time: 200 '%ab' tokens takes approximately 0.7s, 700 tokens approximately 6s, and 1400 tokens approximately 33s. An attacker can cause significant CPU consumption and event-loop blocking via crafted input.","status":"published","published":"2026-06-30T08:05:36.399Z","modified":"2026-06-30T12:49:30.364Z","cvss":[{"version":"4.0","score":6.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/S:N/AU:Y/R:U/V:D/RE:M/U:Amber","level":"medium","assessor":"cna"}],"cwes":["CWE-400","CWE-407"],"updated_at":"2026-11-02T13:46:43.922571Z"}],"euvd":[{"id":"EUVD-2026-40267","description":"decode-uri-component through 0.4.1 is vulnerable to denial of service. The decode() function splits input on '%' producing N tokens and calls decodeComponents(), exhibiting super-linear parsing time: 200 '%ab' tokens takes approximately 0.7s, 700 tokens approximately 6s, and 1400 tokens approximately 33s. An attacker can cause significant CPU consumption and event-loop blocking via crafted input.","status":"published","published":"2026-06-30T08:05:36Z","modified":"2026-06-30T12:49:30Z","cvss":[{"version":"4.0","score":6.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/S:N/AU:Y/R:U/V:D/RE:M/U:Amber","level":"medium"}],"updated_at":"2026-11-02T18:20:21.627235Z"}],"ghsa":[{"id":"GHSA-vcc3-ghjq-m6fr","title":"decode-uri-component: Denial of service via exponential decoding of malformed percent-encoded input","description":"### Impact\nAn attacker who can supply input to `decodeUriComponent()` (directly or via a dependency that uses this package on URL/query/path data) can cause excessive CPU usage and application unresponsiveness. This is an availability issue; there is no known memory corruption, data disclosure, or remote code execution impact.\n\n### Patches\nUpgrade to `decode-uri-component@0.5.0`.\n\n### Workarounds\nLimit the size of the input.","status":"published","published":"2026-08-31T22:10:20Z","modified":"2026-08-31T22:10:21Z","cvss":[{"version":"4.0","score":6.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/S:N/AU:Y/R:U/V:D/RE:M/U:Amber","level":"medium"}],"cwes":["CWE-400","CWE-405","CWE-407","CWE-1176"],"updated_at":"2026-11-02T14:41:08.980668Z"}],"nvd":[{"id":"CVE-2026-45822","description":"decode-uri-component through 0.4.1 is vulnerable to denial of service. The decode() function splits input on '%' producing N tokens and calls decodeComponents(), exhibiting super-linear parsing time: 200 '%ab' tokens takes approximately 0.7s, 700 tokens approximately 6s, and 1400 tokens approximately 33s. An attacker can cause significant CPU consumption and event-loop blocking via crafted input.","status":"published","published":"2026-06-30T09:16:25.177Z","modified":"2026-10-25T21:10:00.77Z","cvss":[{"version":"4.0","score":6.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/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:N/AU:Y/R:U/V:D/RE:M/U:Amber","level":"medium","assessor":"secondary"}],"cwes":["CWE-400","CWE-407"],"updated_at":"2026-11-02T14:12:26.508751Z"}],"osv":[{"id":"CVE-2026-45822","description":"decode-uri-component through 0.4.1 is vulnerable to denial of service. The decode() function splits input on '%' producing N tokens and calls decodeComponents(), exhibiting super-linear parsing time: 200 '%ab' tokens takes approximately 0.7s, 700 tokens approximately 6s, and 1400 tokens approximately 33s. An attacker can cause significant CPU consumption and event-loop blocking via crafted input.","status":"published","published":"2026-06-30T08:05:36.399Z","modified":"2026-10-28T02:31:13.741141183Z","cvss":[{"version":"4.0","score":6.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/S:N/AU:Y/R:U/V:D/RE:M/U:Amber","level":"medium"}],"cwes":["CWE-400","CWE-407"],"updated_at":"2026-11-02T15:45:05.525666Z"},{"id":"GHSA-vcc3-ghjq-m6fr","title":"decode-uri-component: Denial of service via exponential decoding of malformed percent-encoded input","description":"### Impact\nAn attacker who can supply input to `decodeUriComponent()` (directly or via a dependency that uses this package on URL/query/path data) can cause excessive CPU usage and application unresponsiveness. This is an availability issue; there is no known memory corruption, data disclosure, or remote code execution impact.\n\n### Patches\nUpgrade to `decode-uri-component@0.5.0`.\n\n### Workarounds\nLimit the size of the input.","status":"published","published":"2026-08-31T22:10:20Z","modified":"2026-09-10T03:51:14.713899943Z","cvss":[{"version":"4.0","score":6.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/S:N/AU:Y/R:U/V:D/RE:M/U:Amber","level":"medium"}],"cwes":["CWE-1176","CWE-400","CWE-405","CWE-407"],"updated_at":"2026-11-02T15:46:56.981655Z"},{"id":"UBUNTU-CVE-2026-45822","description":"decode-uri-component through 0.4.1 is vulnerable to denial of service. The decode() function splits input on '%' producing N tokens and calls decodeComponents(), exhibiting super-linear parsing time: 200 '%ab' tokens takes approximately 0.7s, 700 tokens approximately 6s, and 1400 tokens approximately 33s. An attacker can cause significant CPU consumption and event-loop blocking via crafted input.","status":"published","published":"2026-06-30T09:16:00Z","modified":"2026-10-17T13:00:11.482650972Z","cvss":[{"version":"4.0","score":6.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/S:N/AU:Y/R:U/V:D/RE:M/U:Amber","level":"medium"}],"updated_at":"2026-11-02T16:56:26.396868Z"},{"id":"AZL-92075","title":"CVE-2026-45822 affecting package js-jquery 3.5.0-4","description":"decode-uri-component through 0.4.1 is vulnerable to denial of service. The decode() function splits input on '%' producing N tokens and calls decodeComponents(), exhibiting super-linear parsing time: 200 '%ab' tokens takes approximately 0.7s, 700 tokens approximately 6s, and 1400 tokens approximately 33s. An attacker can cause significant CPU consumption and event-loop blocking via crafted input.","status":"published","published":"2026-06-30T09:16:25Z","modified":"2026-11-05T05:36:30Z","updated_at":"2026-11-05T16:41:25.633663Z"},{"id":"CLSA-2026-1788255041","title":"TuxCare security update for decode-uri-component (1 CVE)","description":"TuxCare rebuilt decode-uri-component to address 1 CVE. Fixed in 0.2.2-tuxcare.1.","status":"published","published":"2026-09-01T09:30:41Z","modified":"2026-10-15T09:47:55.176161964Z","updated_at":"2026-11-02T15:43:47.591214Z"}]}}