CVE-2026-120222
Published:November 06, 2026
Updated:November 09, 2026
undici is an HTTP client for Node.js. In versions 7.0.0 through 7.30.1 and 8.0.0 through 8.12.3, when the cache interceptor is composed with a downstream handler that throws during response processing (such as the built-in dump interceptor exceeding its maxSize, or the decompress interceptor rejecting more than five Content-Encoding values), a throw raised asynchronously while a cached response is replayed escapes as an uncaught exception or unhandled promise rejection and terminates the Node.js process. A malicious or compromised HTTP server can crash any such client by serving a cacheable response that triggers the throw on replay, including on a 304 revalidation of a stale entry, so the impact is availability only. The issue is fixed in undici 7.30.2 and 8.12.4, and users should upgrade to one of those versions or later. As a workaround, avoid composing the cache interceptor with a response handler that throws during response processing until upgrading.
Affected Packages
https://github.com/nodejs/undici.git (GITHUB):
Affected version(s) >=v7.0.0-alpha.3 <v7.30.2 || >=v7.0.0 <v7.30.2Fix Suggestion:
Update to version v7.30.2https://github.com/nodejs/undici.git (GITHUB):
Affected version(s) >=v8.0.0 <v8.12.4Fix Suggestion:
Update to version v8.12.4undici (NPM):
Affected version(s) >=8.0.0 <8.12.4Fix Suggestion:
Update to version 8.12.4undici (NPM):
Affected version(s) >=7.0.0-alpha.3 <7.30.2 || >=7.0.0 <7.30.2Fix Suggestion:
Update to version 7.30.2Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
EPSS
Base Score:
0.31