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VulnerabilityPublished

CVE-2026-123829: Permission Model Bypass

Source GCVE Database

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Authoritative record:CVE-2026-123829· Low 2.5

Not known to be exploited · CVSS 2.5 Low · fixed in 26.13.1 : update node when convenient.

Data as of 11 Nov 2026, 22:35 UTC

CVSS 3.0 base score
2.5Low
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (openjs)CVSS 3.02.5
Patch
Available – fixed in 26.13.1, 24.22.3, 22.23.5
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  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), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

What to do

Upgrade node to 26.13.1, 24.22.3 or 22.23.5.

Affected software

ProductAffectedFixed in
nodejsnodeAffected
  • >=25.0.0 <26.13.1
Fixed in
  • 26.13.1
nodejsnodeAffected
  • >=23.0.0 <24.22.3
Fixed in
  • 24.22.3
nodejsnodeAffected
  • <22.23.5
Fixed in
  • 22.23.5
npmnodepkg:npm/nodeOther threatsAffected
  • <22.23.5
  • >=23.0.0 <24.22.3
  • >=25.0.0 <26.13.1
Fixed in
  • 22.23.5
  • 24.22.3
  • 26.13.1

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

AI-suggested

If you cannot patch yet, consider restricting use of recursive file watching with fs.watch() or fs.promises.watch() on macOS and Windows, especially in environments with strict permission models.

Description

CVE-2026-123829 is a permission model bypass vulnerability in Node.js recursive file watching on macOS and Windows. It allows processes with read permission on a directory to learn the names and timing metadata of files and directories within subdirectories they cannot read. This occurs because the native libuv watcher forwards file names without verifying read permissions on each path. The vulnerability does not expose file contents and requires files created by another actor under the watched directory. It affects Node.js versions 22.x, 24.x, and 26.x.

References

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