Bug 2528088 (CVE-2026-84962)

Summary: CVE-2026-84962 MONGOCRYPT: MONGOCRYPT: Privilege escalation due to KMS request forgery
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in MONGOCRYPT. An unauthorized user with key vault write access could exploit this vulnerability to cause an authorized client to issue arbitrary authenticated Google Cloud KMS (Key Management Service) API calls. This could lead to privilege escalation, allowing the unauthorized user to gain elevated database-level access into cloud key control and defeat client-side encryption.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2542410, 2542411, 2542412, 2542413, 2542414, 2542415, 2542416    
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Description OSIDB Bzimport 2026-09-03 15:32:15 UTC
An unauthorized user with key vault write access may cause an authorized client to issue arbitrary authenticated Google Cloud KMS API calls under the authorized user's identity, escalating database-level access into cloud key control and defeating client-side encryption.