CVE-2025-47279

LOW

Undici < 5.29.0, 6.0.0-6.21.1, 7.0.0-7.4.9 - Memory Leak via Repeated Webhook Calls

Title source: llm
STIX 2.1

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)

Core 4

Scores

CVSS v3 3.1
EPSS 0.0025
EPSS Percentile 16.6%
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