CVE-2026-45822

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.

• Published Jun 30, 2026
• CVSS 6.6 medium
• 0.5% chance of exploitation in the next 30 days (EPSS)
• A fix is available

CVE-2026-45822 at the National Vulnerability Database