Bug 2457859 (CVE-2026-29628)

Summary: CVE-2026-29628 tinyobjloader: tinyobjloader: Denial of Service via crafted .mtl file
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in tinyobjloader. A stack overflow vulnerability exists in the `experimental/tinyobj_loader_opt.h` file. A remote attacker could exploit this by supplying a specially crafted .mtl file. This could lead to a Denial of Service (DoS), making the application unavailable.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2457893    
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Description OSIDB Bzimport 2026-04-13 15:03:34 UTC
A stack overflow in the experimental/tinyobj_loader_opt.h file of tinyobjloader commit d56555b allows attackers to cause a Denial of Service (DoS) via supplying a crafted .mtl file.