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.
Published: 2025-05-15
Score: 3.1 Low
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
EUVD EUVD EUVD-2025-15389 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.
Github GHSA Github GHSA GHSA-cxrh-j4jr-qwg3 undici Denial of Service attack via bad certificate data
History

Fri, 06 Feb 2026 19:30:00 +0000


Fri, 16 May 2025 15:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Low


Fri, 16 May 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 15 May 2025 17:30:00 +0000

Type Values Removed Values Added
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.
Title undici Denial of Service attack via bad certificate data
Weaknesses CWE-401
References
Metrics cvssV3_1

{'score': 3.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-02-06T19:14:56.281Z

Reserved: 2025-05-05T16:53:10.373Z

Link: CVE-2025-47279

cve-icon Vulnrichment

Updated: 2025-05-15T17:56:23.757Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-05-15T18:15:38.027

Modified: 2026-02-06T20:16:08.110

Link: CVE-2025-47279

cve-icon Redhat

Severity : Low

Publid Date: 2025-05-15T17:16:02Z

Links: CVE-2025-47279 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-06-23T19:31:58Z

Weaknesses