{"id":"GHSA-vcc3-ghjq-m6fr","summary":"decode-uri-component: Denial of service via exponential decoding of malformed percent-encoded input","details":"### 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.","aliases":["CVE-2026-45822"],"modified":"2026-09-10T03:51:14.713899943Z","published":"2026-08-31T22:10:20Z","database_specific":{"cwe_ids":["CWE-1176","CWE-400","CWE-405","CWE-407"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-08-31T22:10:20Z","nvd_published_at":"2026-06-30T09:16:25Z"},"references":[{"type":"WEB","url":"https://github.com/SamVerschueren/decode-uri-component/security/advisories/GHSA-vcc3-ghjq-m6fr"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45822"},{"type":"WEB","url":"https://github.com/SamVerschueren/decode-uri-component/commit/fa479dafeede7bedf04e5c89aa78f2a78c664005"},{"type":"PACKAGE","url":"https://github.com/SamVerschueren/decode-uri-component"},{"type":"WEB","url":"https://github.com/SamVerschueren/decode-uri-component/blob/00662938dc7c6241547ae8abce7785cc13ffd3f6/index.js"},{"type":"WEB","url":"https://github.com/SamVerschueren/decode-uri-component/releases/tag/v0.5.0"},{"type":"WEB","url":"https://www.npmjs.com/package/decode-uri-component"}],"affected":[{"package":{"name":"decode-uri-component","ecosystem":"npm","purl":"pkg:npm/decode-uri-component"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.5.0"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 0.4.2","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-vcc3-ghjq-m6fr/GHSA-vcc3-ghjq-m6fr.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}