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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-5439

Memory Exhaustion via Forged ZIP Metadata

Description

A memory exhaustion vulnerability exists in ZIP archive processing. Orthanc automatically extracts ZIP archives uploaded to certain endpoints and trusts metadata fields describing the uncompressed size of archived files. An attacker can craft a small ZIP archive containing a forged size value, causing the server to allocate extremely large buffers during extraction.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Orthanc DICOM Server

  • 0 to ≤ 1.12.10affected

References