CVE-2026-58045: CWE-400 Uncontrolled Resource Consumption in nodejs node
A vulnerability in Node.js allows a specially crafted spoofed TypedArray byteLength to trigger an assertion failure in synchronous node:zlib APIs, causing the process to crash. This affects all 11 synchronous zlib functions and can be exploited repeatedly to cause denial of service. The issue impacts Node.js versions 22.x, 24.x, and 26.x. No official patch or remediation guidance is currently confirmed.
AI Analysis
Technical Summary
CVE-2026-58045 is a resource consumption vulnerability (CWE-400) in Node.js where a spoofed TypedArray byteLength can trigger a reachable assertion in synchronous node:zlib APIs. This assertion failure causes the entire Node.js process to crash. All 11 synchronous zlib functions are affected. The vulnerability affects Node.js versions 22.23.1, 24.18.0, and 26.5.0. The CVSS 3.0 score is 6.2 (medium severity) with an attack vector of local (AV:L), low attack complexity, no privileges required, no user interaction, and impacts availability only. There is no vendor advisory or patch information available at this time.
Potential Impact
Successful exploitation causes the Node.js process to crash, resulting in denial of service. There is no impact on confidentiality or integrity. Repeated exploitation can sustain denial of service conditions.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid processing untrusted input that could trigger this vulnerability in synchronous node:zlib APIs.
CVE-2026-58045: CWE-400 Uncontrolled Resource Consumption in nodejs node
Description
A vulnerability in Node.js allows a specially crafted spoofed TypedArray byteLength to trigger an assertion failure in synchronous node:zlib APIs, causing the process to crash. This affects all 11 synchronous zlib functions and can be exploited repeatedly to cause denial of service. The issue impacts Node.js versions 22.x, 24.x, and 26.x. No official patch or remediation guidance is currently confirmed.
CVSS v3.0
Score 6.2medium
Affected software
nodejs
node
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-58045 is a resource consumption vulnerability (CWE-400) in Node.js where a spoofed TypedArray byteLength can trigger a reachable assertion in synchronous node:zlib APIs. This assertion failure causes the entire Node.js process to crash. All 11 synchronous zlib functions are affected. The vulnerability affects Node.js versions 22.23.1, 24.18.0, and 26.5.0. The CVSS 3.0 score is 6.2 (medium severity) with an attack vector of local (AV:L), low attack complexity, no privileges required, no user interaction, and impacts availability only. There is no vendor advisory or patch information available at this time.
Potential Impact
Successful exploitation causes the Node.js process to crash, resulting in denial of service. There is no impact on confidentiality or integrity. Repeated exploitation can sustain denial of service conditions.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid processing untrusted input that could trigger this vulnerability in synchronous node:zlib APIs.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- hackerone
- Date Reserved
- 2026-06-27T15:00:00.780Z
- Cvss Version
- 3.0
- State
- PUBLISHED
Threat ID: 6a713a63bf32cb7a3480a4db
Added to database: 08/04/2026, 01:03:31 UTC
Last enriched: 08/11/2026, 18:28:26 UTC
Last updated: 09/17/2026, 22:01:36 UTC
Views: 58
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