VDB-385744 · CVE-2026-58045 · EUVD-2026-52562

Node.js 22.x/24.x/26.x node:zlib byteLength denial of service

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.2	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Node.js 22.x/24.x/26.x. The impacted element is an unknown function of the component node:zlib. Executing a manipulation of the argument byteLength can lead to denial of service. The identification of this vulnerability is CVE-2026-58045. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability has been found in Node.js 22.x/24.x/26.x and classified as problematic. This vulnerability affects some unknown functionality of the component node:zlib. The manipulation of the argument byteLength with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. CVE summarizes:

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**.

This vulnerability was named CVE-2026-58045. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at EUVD (EUVD-2026-52562) and CERT Bund (WID-SEC-2026-2585). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

Red Hat Enterprise Linux
RESF Rocky Linux
SUSE Linux
SUSE openSUSE
Oracle Linux
Open Source Node.js

Productinfo

Type

JavaScript Library

Name

Node.js

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.2
CNA Vector: 🔒

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/04/2026 Advisory disclosed
08/04/2026 +0 days VulDB entry created
09/04/2026 +31 days VulDB entry last update

Sourcesinfo

Status: Not defined

CVE: CVE-2026-58045 (🔒)
GCVE (CVE): GCVE-0-2026-58045
GCVE (VulDB): GCVE-100-385744
EUVD: 🔒
CERT Bund: WID-SEC-2026-2585 - Node.js: Mehrere Schwachstellen

Entryinfo

Created: 08/04/2026 04:43
Updated: 09/04/2026 05:55
Changes: 08/04/2026 04:43 (49), 08/04/2026 06:53 (1), 08/31/2026 20:47 (7), 09/03/2026 00:44 (1), 09/04/2026 05:55 (12)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.