🛡️ CVE-2025-71330 — image-size

🟠 CVSS 8.0 — High ⚠️ Exploit Public CWE-835 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

image-size: ICNS parser allows denial of service through an infinite loop

image-size through 2.0.2 contains a denial of service vulnerability that allows remote attackers to permanently block the Node.js event loop by supplying a specially crafted ICNS image buffer. Attackers can craft an ICNS buffer containing valid magic bytes and a zero-valued entry length field to trigger an infinite loop in the ICNS parser, as the offset is never incremented when the entry length field is 0, causing the while loop condition to remain true indefinitely.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

CVE-2025-71330 is classified as CWE-835: Infinite Loop. A loop condition can never become false for some inputs, hanging the process.

Affected software

CVE-2025-71330 is recorded against 2 packages.

  • image-size
  • unknown

Timeline and source

Published on 10 June 2026 and last revised on 7 August 2026. A public exploit is known to exist, which raises the urgency of patching considerably. A vendor advisory or fix has been published. Record sourced from NVD.

References

nvd.nist.gov (Advisory)
github.com (Package)
joshua.hu (Web)
web.archive.org (Web)
www.vulncheck.com (Web)

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-835
Public Exploit ⚠️ Yes
Source NVD
Published 2026-06-10
Updated 2026-08-12
Modified 2026-08-07

Affected Packages

Software From version Fixed in
image-size — —
unknown — —

Similar Threats

Exploit Protection

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CVE-2025-71330 carries CVSS 8.0 High rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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