CVE-2025-71329

EUVD-2025-210106

10.06.2026, 14:16

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.

Infinite Loop

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	7.5 HIGH	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 35%

Affected Products (NVD)

Vendor	Product	Version
image-size	image-size	1.1.0 ≤ 𝑥 ≤ 1.2.1
image-size	image-size	2.0.0 ≤ 𝑥 ≤ 2.0.2

𝑥

= Vulnerable software versions

Known Exploits!

https://joshua.hu/image-size-infinite-loop-dos-vulnerabilities

Common Weakness Enumeration

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
The program contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

References

https://joshua.hu/image-size-infinite-loop-dos-vulnerabilities

https://web.archive.org/web/20260224152152/https://github.com/image-size/image-size/pull/439

https://www.vulncheck.com/advisories/image-size-denial-of-service-via-infinite-loop-in-jxl-heif-parser