CVE-2025-53009 MaterialX Stack Overflow via Lack of MTLX XML Parsing Recursion Limit
An attacker can crash applications using MaterialX by sending a malicious MTLX file with deeply nested nodegraphs, causing stack exhaustion.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-53009?
CVE-2025-53009 is a medium-severity denial of service vulnerability in AcademySoftwareFoundation MaterialX, published on 1 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
MaterialX is an open standard for the exchange of rich material and look-development content across applications and renderers. In versions 1.39.2 and below, when parsing an MTLX file with multiple nested nodegraph implementations, the MaterialX XML parsing logic can potentially crash due to stack exhaustion. An attacker could intentionally crash a target program that uses OpenEXR by sending a malicious MTLX file. This is fixed in version 1.39.3.
Weakness: CWE-121
Which versions are affected by CVE-2025-53009?
3 open source packages ship an affected version, including materialx and MaterialX. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
materialx PyPI | From 1.39.2 | 1.39.3 |
materialx PyPI | From 1.39.2 | 1.39.3 |
MaterialX PyPI | From 1.39.2 | 1.39.3 |
Products include Linuxfoundation Materialx.
How do I fix CVE-2025-53009?
Upgrade materialx to 1.39.3 or later.
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-2025-53009 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-53009 exists.
Other vulnerabilities in AcademySoftwareFoundation MaterialX
- CVE-2025-53012 MaterialX's Lack of Import Depth Limit Leads to DoS (Denial-Of-Service) Via Stack Exhaustion
- CVE-2025-53010 MaterialX's unchecked nodeGraph->getOutput return is vulnerable to NULL Pointer Dereference
- CVE-2025-53011 MaterialX is Vulnerable to NULL Pointer Dereference due to Unchecked implGraphOutput
Sources
Also known as GHSA-wx6g-fm6f-w822, PYSEC-2026-1609.