Description
A flaw in Node.js allows a spoofed `TypedArray` `byteLength` to trigger a reachable assertion in the synchronous `node:zlib` APIs, causing the entire process to crash. All 11 synchronous zlib functions are affected. Repeated exploitation of this condition can result in a denial of service. This vulnerability affects Node.js **22.x**, **24.x**, and **26.x**.
References (1)
Core 1
Scores
CVSS v3
6.2
EPSS
0.0019
EPSS Percentile
8.8%
Attack Vector
LOCAL
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-400
Status
published
Products (3)
nodejs/node
22.23.1
nodejs/node
24.18.0
nodejs/node
26.5.0
Published
Aug 04, 2026
Tracked Since
Aug 04, 2026