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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00106.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
image-size image-size unaffected
Version Status Constraints
1.1.0 affected ≤ 1.2.1
2.0.0 affected ≤ 2.0.2

No data.

No data.

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Vendors Products
Image Sizes Project Subscribe
Image Sizes Subscribe

Project Subscriptions

Vendors Products
Image Sizes Project Subscribe
Image Sizes Subscribe
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-m5qc-5hw7-8vg7 image-size Denial of Service via Infinite Loop during Image Processing
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://joshua.hu/image-size-infinite-loop-dos-vulnerabilities cve-icon cve-icon
https://web.archive.org/web/20260224152152/https://github.com/image-size/image-size/pull/439 cve-icon cve-icon
https://www.vulncheck.com/advisories/image-size-denial-of-service-via-infinite-loop-in-jxl-heif-parser cve-icon cve-icon
History

Wed, 10 Jun 2026 14:30:00 +0000

Type Values Removed Values Added
References

Wed, 10 Jun 2026 13:30:00 +0000

Type Values Removed Values Added
Description image-size 1.1.0 before 1.2.1 and 2.0.0 before 2.0.2 contain a denial of service vulnerability in the findBox function when processing specially crafted images with zero-sized boxes. Remote attackers can cause application hang by supplying malicious JXL, HEIF, or JP2 image files with box size zero, triggering infinite loops during image validation. 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.
Title image-size < 1.2.1, 2.0.2 - Denial of Service via Infinite Loop in findBox Function image-size 2.0.2 Denial of Service via Infinite Loop in JXL/HEIF Parser
References

Wed, 10 Jun 2026 11:15:00 +0000

Type Values Removed Values Added
First Time appeared Image Sizes Project
Image Sizes Project image Sizes
Vendors & Products Image Sizes Project
Image Sizes Project image Sizes

Tue, 09 Jun 2026 20:30:00 +0000

Type Values Removed Values Added
Description image-size 1.1.0 before 1.2.1 and 2.0.0 before 2.0.2 contain a denial of service vulnerability in the findBox function when processing specially crafted images with zero-sized boxes. Remote attackers can cause application hang by supplying malicious JXL, HEIF, or JP2 image files with box size zero, triggering infinite loops during image validation.
Title image-size < 1.2.1, 2.0.2 - Denial of Service via Infinite Loop in findBox Function
Weaknesses CWE-835
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-06-10T12:55:58.825Z

Reserved: 2026-06-08T20:44:31.209Z

Link: CVE-2025-71319

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-06-09T21:17:03.153

Modified: 2026-06-10T14:16:30.010

Link: CVE-2025-71319

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-10T15:15:07Z

Weaknesses