// For flags

CVE-2025-47279

undici Denial of Service attack via bad certificate data

Severity Score

3.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

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.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Attack Vector
Network
Attack Complexity
High
Authentication
Single
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
Poc
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2025-05-05 CVE Reserved
  • 2025-05-15 CVE Published
  • 2025-05-16 CVE Updated
  • 2025-06-16 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-401: Missing Release of Memory after Effective Lifetime
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Nodejs
Search vendor "Nodejs"
Undici
Search vendor "Nodejs" for product "Undici"
< 5.29.0
Search vendor "Nodejs" for product "Undici" and version " < 5.29.0"
en
Affected
Nodejs
Search vendor "Nodejs"
Undici
Search vendor "Nodejs" for product "Undici"
>= 6.0.0 < 6.21.2
Search vendor "Nodejs" for product "Undici" and version " >= 6.0.0 < 6.21.2"
en
Affected
Nodejs
Search vendor "Nodejs"
Undici
Search vendor "Nodejs" for product "Undici"
>= 7.0.0 < 7.5.0
Search vendor "Nodejs" for product "Undici" and version " >= 7.0.0 < 7.5.0"
en
Affected