CVE-2025-71329

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://joshua.hu/image-size-infinite-loop-dos-vulnerabilities	Exploit Third Party Advisory
https://web.archive.org/web/20260224152152/https://github.com/image-size/image-size/pull/439	Issue Tracking Patch
https://www.vulncheck.com/advisories/image-size-denial-of-service-via-infinite-loop-in-jxl-heif-parser	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:image-size:image-size::::::::
	cpe:2.3:a:image-size:image-size::::::::

History

No history.

Information

Published : 2026-06-10 14:16

Updated : 2026-06-17 10:04

NVD link : CVE-2025-71329

Mitre link : CVE-2025-71329

CVE.ORG link : CVE-2025-71329

JSON object : View

Products Affected

image-size

image-size

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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