Description
Undici is an HTTP/1.1 client for Node.js. Prior to versions 5.29.0, 6.21.2, and 7.5.0, applications that use undici to implement a webhook-like system are vulnerable. If the attacker set up a server with an invalid certificate, and they can force the application to call the webhook repeatedly, then they can cause a memory leak. This has been patched in versions 5.29.0, 6.21.2, and 7.5.0. As a workaound, avoid calling a webhook repeatedly if the webhook fails.
References (4)
Scores
CVSS v3
3.1
EPSS
0.0005
EPSS Percentile
14.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-401
Status
published
Products (4)
nodejs/undici
< 5.29.0
nodejs/undici
>= 6.0.0, < 6.21.2
nodejs/undici
>= 7.0.0, < 7.5.0
npm/undici
0 - 5.29.0npm
Published
May 15, 2025
Tracked Since
Feb 18, 2026