CVE-2025-71319 image-size 2.0.2 Denial of Service via Infinite Loop in JXL/HEIF Parser
Remote attackers can cause a permanent application hang in Node.js by supplying crafted JXL or HEIF images to the image-size library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-71319?
CVE-2025-71319 is a high-severity denial of service vulnerability in Redhat Enterprise Linux, published on 9 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-835
Which versions are affected by CVE-2025-71319?
4 open source packages ship an affected version, including image-size. It affects 5 products.
| Package | Affected | Fixed in |
|---|---|---|
image-size npm | From 1.1.0 | 1.2.1 |
image-size npm | From 1.1.0 | 1.2.1 |
image-size npm | From 2.0.0 | 2.0.2 |
image-size npm | From 2.0.0 | 2.0.2 |
Products include Image-Size Image-Size, Redhat Discovery, Redhat Enterprise Linux, Redhat Gatekeeper, Redhat Trusted Artifact Signer.
How do I fix CVE-2025-71319?
Upgrade image-size to a fixed version for your release line: 1.2.1 or 2.0.2.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-71319 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-71319 exists.
Other vulnerabilities in Redhat Enterprise Linux
Sources
Also known as GHSA-m5qc-5hw7-8vg7, ROOT-APP-NPM-CVE-2025-71319.