CVE-2026-48935

File timestamp modification via unchecked FileHandle.utimes

Published Jun 26, 2026 · Updated Jun 26, 2026

Permission bypass in Node.js 22.22.3, 24.16.0, and 26.3.0 allows local users to modify timestamps on read-only files. The promises API's FileHandle.utimes() operation updates file access and modification times without enforcing the Permission Model's filesystem-write check on a handle opened through an allowed read path. Exploitation requires local code execution in a process started with the Permission Model and read access to the target, and the demonstrated consequence is limited to file metadata integrity.

CVSS severity3.3
Low
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Permission bypass in Node.js 22.22.3, 24.16.0, and 26.3.0 allows local users to modify timestamps on read-only files. The promises API's FileHandle.utimes() operation updates file access and modification times without enforcing the Permission Model's filesystem-write check on a handle opened through an allowed read path. Exploitation requires local code execution in a process started with the Permission Model and read access to the target, and the demonstrated consequence is limited to file metadata integrity.

The record

CVE
CVE-2026-48935
Published
Jun 26, 2026
Updated
Jun 26, 2026
Vendor
Node.js
Product
Node.js
Classifications
CWE-276, T1070.006
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 26, 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=22.22.3 <=22.22.3
  2. Affected versionversion=24.16.0 <=24.16.0
  3. Affected versionversion=26.3.0 <=26.3.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Node.js · Node.jsversion=22.22.3 <=22.22.3; version=24.16.0 <=24.16.0; version=26.3.0 <=26.3.0

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1070.006Indicator Removal: Timestomp

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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