Bug 2525240 (CVE-2026-81522)

Summary: CVE-2026-81522 mongo-cxx-driver: MongoDB C++ Driver: Unauthorized data access via namespace identifier injection
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: jcantril, rojacob
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the MongoDB C++ Driver. This weakness allows special characters to be embedded in caller-supplied namespace identifiers. An application that constructs a namespace identifier from untrusted input without proper validation could be redirected to an unintended target. This could lead to limited unauthorized read and write access to data belonging to other logical tenants within the affected application.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-08-27 20:19:16 UTC 
A weakness in the MongoDB C++ Driver's handling of caller-supplied namespace identifiers allows special characters embedded in those identifiers. An application that builds a namespace identifier from untrusted input without validating it may therefore have its operation directed at a different target than intended. This can result in limited unauthorized read and write access to data belonging to another logical tenant of the affected application.