{"id":"CVE-2025-53010","aliases":["GHSA-3jhf-gxhr-q4cx","PYSEC-2026-1606"],"title":"MaterialX Null Pointer Dereference in getShaderNodes due to Unchecked nodeGraph->getOutput return","summary":"MaterialX Null Pointer Dereference in getShaderNodes due to Unchecked nodeGraph->getOutput return","severity":"low","vendor":"materialx","product":"materialx","ecosystem":"pip","affected":["materialx >= 1.39.2, < 1.39.3"],"patched":["materialx 1.39.3"],"published":"2025-07-31","updated":"2026-07-07","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-3jhf-gxhr-q4cx","references":[{"url":"https://github.com/AcademySoftwareFoundation/MaterialX/security/advisories/GHSA-3jhf-gxhr-q4cx"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-53010"},{"url":"https://github.com/AcademySoftwareFoundation/MaterialX/commit/e13344ba13326869d7820b444705f24d56fab73d"},{"url":"https://github.com/AcademySoftwareFoundation/MaterialX"},{"url":"https://github.com/ShielderSec/poc/tree/main/CVE-2025-53010"}],"tags":["osv","pip"],"epss":0.00463,"epssPercentile":0.39277,"ingestedAt":"2026-07-08T18:25:44.929Z","slug":"CVE-2025-53010","body":"## Overview\n\n### Summary\n\nWhen parsing shader nodes in a MTLX file, the MaterialXCore code accesses a potentially null pointer, which can lead to crashes with maliciously crafted files.\n\n### Details\n\nIn `src/MaterialXCore/Material.cpp`, in function `getShaderNodes`, the following code fetches the output nodes for a given `nodegraph` input node:\n\n```cpp\n// SNIP...\n        else if (input->hasNodeGraphString())\n        {\n            // Check upstream nodegraph connected to the input.\n            // If no explicit output name given then scan all outputs on the nodegraph.\n            ElementPtr parent = materialNode->getParent();\n            NodeGraphPtr nodeGraph = parent->getChildOfType<NodeGraph>(input->getNodeGraphString());\n            if (!nodeGraph)\n            {\n                continue;\n            }\n            vector<OutputPtr> outputs;\n            if (input->hasOutputString())\n            {\n                outputs.push_back(nodeGraph->getOutput(input->getOutputString())); // <--- null ptr is returned\n            }\n            else\n            {\n                outputs = nodeGraph->getOutputs();\n            }\n            for (OutputPtr output : outputs)\n            {\n                NodePtr upstreamNode = output->getConnectedNode(); // <--- CRASHES HERE\n                if (upstreamNode && !shaderNodeSet.count(upstreamNode))\n                {\n                    if (!target.empty() && !upstreamNode->getNodeDef(target))\n                    {\n                        continue;\n                    }\n                    shaderNodeVec.push_back(upstreamNode);\n                    shaderNodeSet.insert(upstreamNode);\n                }\n            }\n        }\n    }\n// SNIP...\n```\n\nThe issues arise because the `nodeGraph->getOutput(input->getOutputString())` call can return a null pointer, therefore when trying to call `output->getConnectedNode()`, this results in a crash    .\n\n\n### PoC\n\nPlease download `nullptr_getshadernodes.mltx` from the following link:\n\nhttps://github.com/ShielderSec/poc/tree/main/CVE-2025-53010\n\n`build/bin/MaterialXView --material nullptr_getshadernodes.mtlx`\n\n\n### Impact\n\nAn attacker could intentionally crash a target program that uses OpenEXR by sending a malicious MTLX file.\n\n## Affected packages\n\n- `materialx >= 1.39.2, < 1.39.3`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `materialx 1.39.3`","depth":"sunlit","depthScore":14,"depthScoreParts":{"impact":13.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}