CVE-2025-71329 - CVE House
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Status published High CVE-2025-71329

image-size 2.0.2 Denial of Service via Infinite Loop in JXL/HEIF Parser

Vulnerability Description

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 image buffer with a zero-valued size field in a recognized box-type. Attackers can trigger an infinite loop in the JXL or HEIF image parsers by providing a crafted image containing a box with a size of zero, causing the offset to never advance and permanently hanging the application.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Joshua Rogers (@MegaManSec)

Affected Vendor

Affected Software

image-size
Vulnerable Versions:
1.1.0, 2.0.0

Timeline

Official Publish: June 10th, 2026
Last Modified: July 14th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)