Bug 2454144 (CVE-2026-34543)

Summary: CVE-2026-34543 OpenEXR: OpenEXR: Information disclosure via malicious EXR file
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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 OpenEXR, an image storage format for the motion picture industry. A remote attacker could exploit this vulnerability by tricking a user into opening a specially crafted EXR file. This could lead to the disclosure of sensitive information from heap memory through the decoded pixel data, without requiring any user interaction.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2454223, 2454224, 2454234, 2454236    
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Description OSIDB Bzimport 2026-04-01 22:02:56 UTC 
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.8, sensitive information from heap memory may be leaked through the decoded pixel data (information disclosure). This occurs under default settings; simply reading a malicious EXR file is sufficient to trigger the issue, without any user interaction. This issue has been patched in version 3.4.8.