{"id":"CVE-2026-45822","sourceIdentifier":"22e2d327-25fe-45d7-9f0c-dcd23b7108df","published":"2026-06-30T09:16:25.177","lastModified":"2026-10-25T21:10:00.770","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"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."},{"lang":"es","value":"decode-uri-component hasta la versión 0.4.1 es vulnerable a denegación de servicio. La función decode() divide la entrada por ’%’ produciendo N tokens y llama a decodeComponents(), exhibiendo un tiempo de análisis superlineal: 200 tokens ’%ab’ tardan aproximadamente 0.7s, 700 tokens aproximadamente 6s, y 1400 tokens aproximadamente 33s. Un atacante puede causar un consumo significativo de CPU y el bloqueo del bucle de eventos mediante una entrada manipulada."}],"affected":[{"source":"22e2d327-25fe-45d7-9f0c-dcd23b7108df","affectedData":[{"vendor":"SamVerschueren","product":"decode-uri-component","defaultStatus":"unaffected","platforms":["Linux","macOS","Windows"],"versions":[{"version":"0.1.0","lessThan":"0.5.0","versionType":"semver","status":"affected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"22e2d327-25fe-45d7-9f0c-dcd23b7108df","type":"Secondary","cvssData":{"version":"4.0","vectorString":"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","baseScore":6.6,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"UNREPORTED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NEGLIGIBLE","Automatable":"YES","Recovery":"USER","valueDensity":"DIFFUSE","vulnerabilityResponseEffort":"MODERATE","providerUrgency":"AMBER"}}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-06-30T12:49:21.881218Z","id":"CVE-2026-45822","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"22e2d327-25fe-45d7-9f0c-dcd23b7108df","type":"Secondary","description":[{"lang":"en","value":"CWE-400"},{"lang":"en","value":"CWE-407"}]}],"references":[{"url":"https://github.com/SamVerschueren/decode-uri-component/blob/00662938dc7c6241547ae8abce7785cc13ffd3f6/index.js","source":"22e2d327-25fe-45d7-9f0c-dcd23b7108df"},{"url":"https://github.com/SamVerschueren/decode-uri-component/commit/fa479dafeede7bedf04e5c89aa78f2a78c664005","source":"22e2d327-25fe-45d7-9f0c-dcd23b7108df"},{"url":"https://www.npmjs.com/package/decode-uri-component","source":"22e2d327-25fe-45d7-9f0c-dcd23b7108df"}]}