Bug 2566142 (CVE-2026-120955)

Summary: CVE-2026-120955 mongo-c-driver: mongo-c-driver: Denial of Service via unchecked error conditions in GridFS
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the MongoDB C Driver. The GridFS file retrieval component does not properly check the results of internal operations under certain error conditions. A remote attacker who can influence file download parameters can trigger this flaw to terminate the application process, leading to a Denial of Service (DoS).
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2567323, 2567324    
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Description OSIDB Bzimport 2026-11-03 19:34:51 UTC
The GridFS file download API in the MongoDB C Driver does not check the result of an internal operation under certain error conditions during file retrieval. This can cause the process to terminate when stream operations continue. A user who can influence file download parameters can trigger this condition, which may result in service unavailability for applications using the affected API.