CVE-2026-5438
published 2026-04-09CVE-2026-5438: A gzip decompression bomb vulnerability exists when Orthanc processes HTTP request with `Content-Encoding: gzip`. The server does not enforce limits on…
PriorityP344high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.48%
38.1th percentile
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.
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | orthanc | — | — |
| orthanc-server | orthanc | < 1.12.11 | 1.12.11 |
| orthanc | dicom_server | <= 1.12.10 | — |
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Debian
CVE-2026-5438: orthanc
vendor_debian·2026
CVE-2026-5438 CVE-2026-5438: orthanc
bookworm: open
bullseye: open
forky: open
sid: open
trixie: open
VulDB
Orthanc DICOM Server up to 1.12.10 Gzip Content-Encoding allocation of resources (EUVD-2026-20914 / Nessus ID 305830)
vuldb·2026-04-10
CVE-2026-5438 [LOW] Orthanc DICOM Server up to 1.12.10 Gzip Content-Encoding allocation of resources (EUVD-2026-20914 / Nessus ID 305830)
A vulnerability identified as problematic has been detected in Orthanc DICOM Server up to 1.12.10. Affected is an unknown function of the component Gzip Handler. This manipulation of the argument Content-Encoding causes allocation of resources.
This vulnerability is registered as CVE-2026-5438. Remote exploitation of the attack is possible. No exploit is available.
GHSA
GHSA-7vj5-pm38-6wjv: A gzip decompression bomb vulnerability exists when Orthanc processes HTTP request with `Content-Encoding: gzip`
ghsa_unreviewed·2026-04-09
CVE-2026-5438 GHSA-7vj5-pm38-6wjv: A gzip decompression bomb vulnerability exists when Orthanc processes HTTP request with `Content-Encoding: gzip`
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.
No detection rules found.
No public exploits indexed.
2026-04-09
Published