UBUNTU-CVE-2026-45822

HIGH8.5

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:

Published Jun 30, 2026

Modified 2 weeks ago

Details

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.

Affected Packages

node-source-map-resolve

Ubuntu 25.10

Affected versions:

0.6.0+~cs2.7.3-2

References

REPORT

https://github.com/SamVerschueren/decode-uri-component/blob/00662938dc7c6241547ae8abce7785cc13ffd3f6/index.js

REPORT

https://github.com/SamVerschueren/decode-uri-component/commit/fa479dafeede7bedf04e5c89aa78f2a78c664005

REPORT

https://ubuntu.com/security/CVE-2026-45822