Medium severity · published Jun 30, 2026
CVE-2026-45822
decode-uri-component through 0.4.1 is vulnerable to denial of service
6.6
CVSS
0.5%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DE
decode-uri-component · SamVerschueren
0.1.0 before 0.5.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-45822
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-45822
github.com
https://github.com/SamVerschueren/decode-uri-component/blob/00662938dc7c6241547ae8abce7785cc13ffd3f6/index.js
github.com
https://github.com/SamVerschueren/decode-uri-component/commit/fa479dafeede7bedf04e5c89aa78f2a78c664005
www.npmjs.com
https://www.npmjs.com/package/decode-uri-component
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