CVE-2026-45822
Medium
Description
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.
SeverityMedium
CVSS6.6
Exploit probability—
ProductDecode-uri-component
PublishedJun 30, 2026
First seenJun 30, 2026
How to fix
Update
- decode-uri-component0.5.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| decode-uri-componentnpm | v < 0.5.0 | 0.5.0 |
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