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Database

Asymmetric denial of service In decode-uri-component

Description

decode-uri-component: Denial of service via exponential decoding of malformed percent-encoded input

Impact

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.

Patches

Upgrade to [email protected].

Workarounds

Limit the size of the input.

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem
Component
Affected version
Patched versions

Aliases

1. CVE-2026-458222. NVD-2026-458223. OSV-2026-458224. GHSA-vcc3-ghjq-m6fr5. GCVE-2026-45822

References

1. https://github.com/SamVerschueren/decode-uri-component/security/advisories/GHSA-vcc3-ghjq-m6fr2. https://github.com/SamVerschueren/decode-uri-component/commit/fa479dafeede7bedf04e5c89aa78f2a78c6640053. https://github.com/SamVerschueren/decode-uri-component/blob/00662938dc7c6241547ae8abce7785cc13ffd3f6/index.js4. https://github.com/SamVerschueren/decode-uri-component/releases/tag/v0.5.05. https://www.npmjs.com/package/decode-uri-component

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