// 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
* 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
  • 2025-05-16 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