CVE-2026-45822: decode-uri-component: Denial of service via exponential decoding of malformed percent-encoded input
An 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.
References
- github.com/SamVerschueren/decode-uri-component/blob/00662938dc7c6241547ae8abce7785cc13ffd3f6/index.js
- github.com/SamVerschueren/decode-uri-component/commit/fa479dafeede7bedf04e5c89aa78f2a78c664005
- github.com/SamVerschueren/decode-uri-component/releases/tag/v0.5.0
- github.com/SamVerschueren/decode-uri-component/security/advisories/GHSA-vcc3-ghjq-m6fr
- github.com/advisories/GHSA-vcc3-ghjq-m6fr
- nvd.nist.gov/vuln/detail/CVE-2026-45822
- www.npmjs.com/package/decode-uri-component
Code Behaviors & Features
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