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CVE-2026-5438

7.5 high SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 1

  1. First seenCVSS 7.5 · orthanc-serverNVD modified 2026-10-26 00:10

Affected (CPE criteria) 1

  • cpe:2.3:a:orthanc-server:orthanc:*:*:*:*:*:*:*:*

References 3