PYSEC-2026-1609
See a problem?- Import Source
- https://github.com/pypa/advisory-database/blob/main/vulns/materialx/PYSEC-2026-1609.yaml
- JSON Data
- https://api.osv.dev/v1/vulns/PYSEC-2026-1609
- Aliases
- Published
- 2026-07-07T16:03:00.026599Z
- Modified
- 2026-07-07T17:47:03.413946389Z
- Severity
-
- 5.5 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P CVSS Calculator
- Summary
- MaterialX Stack Overflow via Lack of MTLX XML Parsing Recursion Limit
- Details
-
Summary
When parsing an MTLX file with multiple nested
nodegraphimplementations, the MaterialX XML parsing logic can potentially crash due to stack exhaustion.Details
By specification, multiple kinds of elements in MTLX support nesting other elements, such as in the case of
nodegraphelements. Parsing these subtrees is implemented via recursion, and since there is no max depth imposed on the XML document, this can lead to a stack overflow when the library parses an MTLX file with an excessively high number of nested elements.PoC
Please download the
recursion_overflow.mtlxfile from the following link:https://github.com/ShielderSec/poc/tree/main/CVE-2025-53009
build/bin/MaterialXView --material recursion_overflow.mtlxImpact
An attacker could intentionally crash a target program that uses MaterialX by sending a malicious MTLX file.
- References
-
- https://github.com/AcademySoftwareFoundation/MaterialX/security/advisories/GHSA-wx6g-fm6f-w822
- https://nvd.nist.gov/vuln/detail/CVE-2025-53009
- https://github.com/AcademySoftwareFoundation/MaterialX/issues/2504
- https://github.com/AcademySoftwareFoundation/MaterialX/pull/2505
- https://github.com/AcademySoftwareFoundation/MaterialX/commit/91ffea0de7bfe7bcd0c399b07f04fc48227055ff
- https://github.com/AcademySoftwareFoundation/MaterialX
- https://github.com/AcademySoftwareFoundation/MaterialX/releases/tag/v1.39.3
- https://github.com/ShielderSec/poc/tree/main/CVE-2025-53009
- https://pypi.org/project/materialx
- https://github.com/advisories/GHSA-wx6g-fm6f-w822
Affected packages
PyPI / materialx
Package
- Name
- materialx
- View open source insights on deps.dev
- Purl
- pkg:pypi/materialx