Vulnerability Details CVE-2026-106433
Improper state management in MongoDB libmongocrypt can cause provider-specific data to be treated as an incompatible type when cleaning up a key document containing duplicate masterKey fields. An authenticated actor who can modify key vault documents, or a server that returns such a key document, can cause invalid memory access and invalid frees in the client process. This can terminate the application or corrupt process memory.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 18.7%
CVSS Severity
CVSS v3 Score 8.8
Products affected by CVE-2026-106433
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cpe:2.3:a:mongodb:libmongocrypt:1.10.0
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cpe:2.3:a:mongodb:libmongocrypt:1.10.1
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cpe:2.3:a:mongodb:libmongocrypt:1.11.0
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cpe:2.3:a:mongodb:libmongocrypt:1.12.0
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cpe:2.3:a:mongodb:libmongocrypt:1.13.0
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cpe:2.3:a:mongodb:libmongocrypt:1.13.1
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cpe:2.3:a:mongodb:libmongocrypt:1.13.2
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cpe:2.3:a:mongodb:libmongocrypt:1.14.0
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cpe:2.3:a:mongodb:libmongocrypt:1.14.1
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cpe:2.3:a:mongodb:libmongocrypt:1.15.0
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cpe:2.3:a:mongodb:libmongocrypt:1.15.1
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cpe:2.3:a:mongodb:libmongocrypt:1.15.2
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cpe:2.3:a:mongodb:libmongocrypt:1.16.0
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cpe:2.3:a:mongodb:libmongocrypt:1.17.0
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cpe:2.3:a:mongodb:libmongocrypt:1.17.1
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cpe:2.3:a:mongodb:libmongocrypt:1.17.2
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cpe:2.3:a:mongodb:libmongocrypt:1.17.3
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cpe:2.3:a:mongodb:libmongocrypt:1.18.0
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cpe:2.3:a:mongodb:libmongocrypt:1.18.1
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cpe:2.3:a:mongodb:libmongocrypt:1.18.2
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cpe:2.3:a:mongodb:libmongocrypt:1.19.0
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cpe:2.3:a:mongodb:libmongocrypt:1.19.1
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cpe:2.3:a:mongodb:libmongocrypt:1.19.2
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cpe:2.3:a:mongodb:libmongocrypt:1.20.0
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cpe:2.3:a:mongodb:libmongocrypt:1.20.1
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cpe:2.3:a:mongodb:libmongocrypt:1.20.2
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cpe:2.3:a:mongodb:libmongocrypt:1.20.3
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cpe:2.3:a:mongodb:libmongocrypt:1.20.4
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cpe:2.3:a:mongodb:libmongocrypt:1.5.0
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cpe:2.3:a:mongodb:libmongocrypt:1.5.1
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cpe:2.3:a:mongodb:libmongocrypt:1.5.2
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cpe:2.3:a:mongodb:libmongocrypt:1.6.0
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cpe:2.3:a:mongodb:libmongocrypt:1.6.1
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cpe:2.3:a:mongodb:libmongocrypt:1.6.2
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cpe:2.3:a:mongodb:libmongocrypt:1.7.0
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cpe:2.3:a:mongodb:libmongocrypt:1.7.1
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cpe:2.3:a:mongodb:libmongocrypt:1.7.2
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cpe:2.3:a:mongodb:libmongocrypt:1.7.3
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cpe:2.3:a:mongodb:libmongocrypt:1.7.4
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cpe:2.3:a:mongodb:libmongocrypt:1.8.0
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cpe:2.3:a:mongodb:libmongocrypt:1.8.1
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cpe:2.3:a:mongodb:libmongocrypt:1.8.2
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cpe:2.3:a:mongodb:libmongocrypt:1.8.3
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cpe:2.3:a:mongodb:libmongocrypt:1.8.4
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cpe:2.3:a:mongodb:libmongocrypt:1.9.0
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cpe:2.3:a:mongodb:libmongocrypt:1.9.1