GitHub Advisoryadvisory · npm
GHSA-vcc3-ghjq-m6fr decode-uri-component: Denial of service via exponential decoding of malformed percent-encoded input
MEDIUM
Official page ↗
- Aliases
- CVE-2026-45822
- Ecosystem
- npm
- Packages
- decode-uri-component
- Severity
- Moderate
- CVSS 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
- Weaknesses
- CWE-1176, CWE-400, CWE-405, CWE-407
- Reviewed
- 2026-08-31
Affected packages
• npm decode-uri-component: < 0.5.0 → fixed in 0.5.0
Description
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.
Related
Alias · CVE (1)
- CVE-2026-45822 decode-uri-component through 0.4.1 is vulnerable to denial of service. vulnerability
References
- https://github.com/SamVerschueren/decode-uri-component/security/advisories/GHSA-vcc3-ghjq-m6fr web
- https://nvd.nist.gov/vuln/detail/CVE-2026-45822 advisory
- https://github.com/SamVerschueren/decode-uri-component/commit/fa479dafeede7bedf04e5c89aa78f2a78c664005 web
- https://github.com/SamVerschueren/decode-uri-component package
- https://github.com/SamVerschueren/decode-uri-component/blob/00662938dc7c6241547ae8abce7785cc13ffd3f6/index.js web
- https://github.com/SamVerschueren/decode-uri-component/releases/tag/v0.5.0 web
- https://www.npmjs.com/package/decode-uri-component web