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VulnerabilityPublished

CVE-2026-58045: nodejs node · Uncontrolled Resource Consumption

Affects nodejs nodeSource CVE Database V5

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Not known to be exploited · CVSS 6.2 Medium.

Data as of 1 Nov 2026, 22:58 UTC

CVSS 3.0 base score
6.2Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 4 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    Public exploit code: GitHub proofs of concept

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 1 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
nodejsnodeAffected
  • >=26.5.0 <=26.5.0
  • >=24.18.0 <=24.18.0
  • >=22.23.1 <=22.23.1
Fixed in–
npmnodepkg:npm/nodeOther threatsAffected
  • =22.23.1
  • =24.18.0
  • =26.5.0
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Until a fix is available, avoid processing untrusted input that could trigger this vulnerability in synchronous node:zlib APIs.

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.

References

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