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.
Metrics
Affected Vendors & Products
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Advisories
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Fixes
Solution
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Workaround
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References
History
Thu, 09 Apr 2026 15:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Gzip Decompression Bomb via Content-Encoding Header | |
| References |
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Projects
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MITRE
Status: PUBLISHED
Assigner: certcc
Published:
Updated: 2026-04-09T14:44:05.375Z
Reserved: 2026-04-02T19:21:58.543Z
Link: CVE-2026-5438
Vulnrichment
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NVD
Status : Received
Published: 2026-04-09T15:16:15.327
Modified: 2026-04-09T15:16:15.327
Link: CVE-2026-5438
Redhat
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OpenCVE Enrichment
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Weaknesses
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