Bug 2429304 (CVE-2026-23537)

Summary: CVE-2026-23537 feast: Unauthenticated Arbitrary File Write
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: urgent Docs Contact:
Priority: urgent    
Version: unspecifiedCC: jkoehler, lphiri, security-response-team
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A vulnerability has been identified in the Feast Feature Server’s `/save-document` endpoint that allows an unauthenticated remote attacker to write arbitrary JSON files to the server's filesystem. Although the system attempts to restrict file locations, these protections can be bypassed, enabling an attacker to overwrite vital application configurations or startup scripts. Because this flaw requires no credentials or special privileges, any attacker with network access to the server can potentially compromise the integrity of the system. This could lead to unauthorized system modifications, denial of service through disk exhaustion, or potential remote code execution.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Deadline: 2026-03-21   

Description OSIDB Bzimport 2026-01-13 19:41:21 UTC
Unauthenticated arbitrary file write vulnerability in Feast Feature Server /save-document endpoint allows remote attackers to write JSON files to the filesystem with bypassable path restrictions. Version affected: <=0.58.0