CVE-2026-45822
MediumCVSS 6.6Exploitation Probability (EPSS)
Low risk22th percentile — higher than 22% of all known CVEs
Summary
The decode-uri-component library through version 0.4.1 is vulnerable to denial of service (DoS). 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.
Risk Assessment
The risk is that an attacker can perform a DoS attack by sending specially crafted input, causing high CPU consumption and event-loop blocking, leading to application unavailability for users.
Recommendation
It is recommended to immediately update the decode-uri-component library to version 0.4.2 or later, which includes a fix for the DoS vulnerability.
Original NVD description (English source)
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.