CVE-2026-56847

Permission bypass via unchecked trace log writes

Published Jul 30, 2026 · Updated Jul 30, 2026

Improper permission enforcement in Node.js 22.x, 24.x, and 26.x allows local users to write trace logs outside allowed paths. NodeCategorySet::Enable starts tracing through trace_events.createTracing().enable() without checking FileSystemWrite permission for the resolved trace-event file path. The bypass requires the Permission Model and local code execution, and it can expose trace data or place trace output beyond the configured write allowlist.

CVSS severity3.3
Low
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper permission enforcement in Node.js 22.x, 24.x, and 26.x allows local users to write trace logs outside allowed paths. NodeCategorySet::Enable starts tracing through trace_events.createTracing().enable() without checking FileSystemWrite permission for the resolved trace-event file path. The bypass requires the Permission Model and local code execution, and it can expose trace data or place trace output beyond the configured write allowlist.

The record

CVE
CVE-2026-56847
Published
Jul 30, 2026
Updated
Jul 30, 2026
Vendor
Node.js
Product
Node.js
Classifications
CWE-1119
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jul 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 30, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=22.23.1 <=22.23.1
  2. Affected versionversion=24.18.0 <=24.18.0
  3. Affected versionversion=26.5.0 <=26.5.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Node.js · Node.jsversion=22.23.1 <=22.23.1; version=24.18.0 <=24.18.0; version=26.5.0 <=26.5.0

Published CVSS scores

3.3HackerOneCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1119Excessive Use of Unconditional Branching

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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