Detections
Analytics

Node.js 22.x < 22.23.2 / 24.x < 24.18.1 / 26.x < 26.5.1 Multiple Vulnerabilities (Wednesday, July 29, 2026 Security Releases).

high Nessus Plugin ID 330668

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Synopsis

Node.js - JavaScript run-time environment is affected by multiple vulnerabilities.

Description

The version of Node.js installed on the remote host is prior to 22.23.2, 24.18.1, 26.5.1. It is, therefore, affected by multiple vulnerabilities as referenced in the Wednesday, July 29, 2026 Security Releases advisory.

 - A flaw in Node.js allows a spoofed TypedArray byteLength to trigger a reachable assertion in the synchronous node:zlib APIs, causing the process to crash. Repeated exploitation of this condition can result in a denial of service. Impact: Thank you, to byvini for reporting this vulnerability and thank you RafaelGSS for fixing it. (CVE-2026-58045)

 - A flaw in Node.js HTTP/2 handling can let retained header blocks evade maxSessionMemory limits and cause remote memory exhaustion. Impact: Thank you, to leduckhuong for reporting this vulnerability and thank you mcollina for fixing it. (CVE-2026-56846)

 - A flaw in Node.js HTTP/2 handling allows nghttp2_session_mem_send() to be called re-entrantly while nghttp2_session_mem_recv() is executing, resulting in a heap-use-after-free. Impact: Thank you, to hahahkim for reporting this vulnerability and thank you mcollina for fixing it. (CVE-2026-56848)

 - A flaw in Node.js Permission Model enforcement can over-grant filesystem access across radix-tree prefix boundaries. Under --permission, an attacker who is granted access to one path can abuse radix-tree prefix boundary handling to read from or write to paths outside the intended filesystem allowlist. Impact: Thank you, to sy2n0 for reporting this vulnerability and thank you RafaelGSS for fixing it. (CVE-2026-58043)

 - A flaw in Node.js HTTPS Agent connection reuse can cause PFX object-array key collisions, allowing mutual TLS (mTLS) client identities to be reused across requests configured with different client certificates.
 Impact: Thank you, to yottt for reporting this vulnerability and thank you RafaelGSS for fixing it.
 (CVE-2026-56850)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Node.js version 22.23.2 / 24.18.1 / 26.5.1 or later.

See Also

https://nodejs.org/en/blog/vulnerability/july-2026-security-releases/

Plugin Details

Severity: High

ID: 330668

File Name: nodejs_2026_jul_29.nasl

Version: 1.4

Type: Local

Agent: windows, macosx, unix

Family: Misc.

Published: 7/29/2026

Updated: 8/11/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.77

CVSS v2

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.1

Vector: CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:N

CVSS Score Source: CVE-2026-58043

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:nodejs:node.js

Required KB Items: installed_sw/Node.js

Exploit Ease: No known exploits are available

Patch Publication Date: 7/29/2026

Vulnerability Publication Date: 7/29/2026

Reference Information

CVE: CVE-2026-56846, CVE-2026-56847, CVE-2026-56848, CVE-2026-56850, CVE-2026-58039, CVE-2026-58040, CVE-2026-58041, CVE-2026-58042, CVE-2026-58043, CVE-2026-58044, CVE-2026-58045

IAVB: 2026-B-0216