CVE-2025-71319
image-size 2.0.2 Denial of Service via Infinite Loop in JXL/HEIF Parser
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.
INFO
Published Date :
June 9, 2026, 9:17 p.m.
Last Modified :
June 15, 2026, 5:52 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update image-size to version 1.2.1 or later.
- Update image-size to version 2.0.2 or later.
- Validate image processing for crafted files.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-71319.
| URL | 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 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-71319 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-71319
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-71319 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-71319 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 15, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:image-size:image-size:*:*:*:*:*:node.js:*:* versions up to (including) 2.0.2 Added Reference Type VulnCheck: https://joshua.hu/image-size-infinite-loop-dos-vulnerabilities Types: Exploit, Third Party Advisory Added Reference Type VulnCheck: https://web.archive.org/web/20260224152152/https://github.com/image-size/image-size/pull/439 Types: Issue Tracking, Patch Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/image-size-denial-of-service-via-infinite-loop-in-jxl-heif-parser Types: Third Party Advisory -
CVE Modified by [email protected]
Jun. 10, 2026
Action Type Old Value New Value Changed 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. Added Reference https://joshua.hu/image-size-infinite-loop-dos-vulnerabilities Added Reference https://web.archive.org/web/20260224152152/https://github.com/image-size/image-size/pull/439 Added Reference https://www.vulncheck.com/advisories/image-size-denial-of-service-via-infinite-loop-in-jxl-heif-parser Removed Reference https://github.com/image-size/image-size/security/advisories/GHSA-m5qc-5hw7-8vg7 Removed Reference https://www.vulncheck.com/advisories/image-size-denial-of-service-via-infinite-loop-in-findbox-function -
New CVE Received by [email protected]
Jun. 09, 2026
Action Type Old Value New Value Added Tag unsupported-when-assigned 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-835 Added Reference https://github.com/image-size/image-size/security/advisories/GHSA-m5qc-5hw7-8vg7 Added Reference https://www.vulncheck.com/advisories/image-size-denial-of-service-via-infinite-loop-in-findbox-function