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CVE-2026-5438 (GCVE-0-2026-5438)

Vulnerability from cvelistv5 – Published: 2026-04-09 14:44 – Updated: 2026-04-14 16:34
VLAI
Title
Gzip Decompression Bomb via Content-Encoding Header
Summary
A gzip decompression bomb vulnerability exists when Orthanc processes HTTP request with `Content-Encoding: gzip`. The server does not enforce limits on decompressed size and allocates memory based on attacker-controlled compression metadata. A specially crafted gzip payload can trigger excessive memory allocation and exhaust system memory.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-14 15:13 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Orthanc DICOM Server Affected: 0 , ≤ 1.12.10 (custom)
guessed Create a notification for this product.
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