CVE-2026-5438 (GCVE-0-2026-5438)
Vulnerability from cvelistv5 – Published: 2026-04-09 14:44 – Updated: 2026-04-14 16:34
VLAI
EPSS
VEX
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)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-14 15:13 UTC
Assigner
References
3 references
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Orthanc | DICOM Server |
Affected:
0 , ≤ 1.12.10
(custom)
|
guessed |
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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