Bug 2495387 (CVE-2026-50003)

Summary: CVE-2026-50003 DCMTK: DCMTK: Arbitrary file write due to directory traversal vulnerability
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: urgent Docs Contact:
Priority: urgent    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in DCMTK. A malicious or compromised server can exploit a vulnerability in the DCMTK client's bit-preserving C-GET storage mode. This allows the server to write files to arbitrary locations on the client system, potentially leading to system compromise or data corruption.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2495890, 2495891    
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Description OSIDB Bzimport 2026-06-30 22:01:34 UTC
A malicious or compromised server can make a DCMTK client using bit-preserving C-GET storage mode write files outside the chosen output directory, using both relative (../) paths and absolute paths.