Bug 2521008 (CVE-2026-48753)

Summary: CVE-2026-48753 incus: Incus has an arbitrary file write via path traversal in S3 multipart upload
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: urgent Docs Contact:
Priority: urgent    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Incus, a container and virtual machine manager. The S3 upload endpoint is vulnerable to path traversal, allowing creation of arbitrary files on the host, potentially leading to command execution.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2524277    
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Description OSIDB Bzimport 2026-08-21 14:56:39 UTC
Incus is a system container and virtual machine manager. Prior to version 7.1.0, the S3 protocol upload endpoint is vulnerable to path traversal and allows creation of arbitrary files on the host. This behavior could lead to arbitrary command execution. Version 7.1.0 fixes the issue.