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5 vulnerabilities found for C++ Driver by MongoDB
CVE-2026-84970 (GCVE-0-2026-84970)
Vulnerability from nvd – Published: 2026-09-03 14:56 – Updated: 2026-09-03 15:17
VLAI
EPSS
VEX
Title
Heap over-read or silent misparse via 32-bit truncation of JSON length in BSON JSON parser
Summary
A numeric truncation weakness exists in the JSON parsing component of the MongoDB C++ Driver's BSON library. An actor who controls the text that an embedding application hands to the library's public JSON parsing interface, when that text is very large, can cause the library to read memory beyond the supplied buffer and return it to the caller, to silently accept only part of the input as a complete document, or to terminate the process. No MongoDB server, credentials, or non-default configuration is required; the effect is confined to the process that uses the library.
Severity
6.2 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 15:14 UTC
CWE
- CWE-681 - Incorrect Conversion between Numeric Types
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MongoDB | C++ Driver |
Affected:
3.2.0 , < 4.5.2
(semver)
|
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CVE-2026-81522 (GCVE-0-2026-81522)
Vulnerability from nvd – Published: 2026-08-27 18:32 – Updated: 2026-08-29 03:55
VLAI
EPSS
VEX
Title
Cross-tenant database retargeting via dot/NUL injection in namespace strings in the C++ Driver
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 00:00 UTC
CWE
- CWE-116 - Improper Encoding or Escaping of Output
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MongoDB | C++ Driver |
Affected:
3.0.0 , < 4.5.1
(semver)
|
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CVE-2026-84966 (GCVE-0-2026-84966)
Vulnerability from cvelistv5 – Published: 2026-09-03 15:00 – Updated: 2026-09-03 15:00
VLAI
EPSS
VEX
Title
BSON element injection via NUL-embedded document keys in builder append
Summary
An incorrect numeric type conversion in the BSON document building component of the MongoDB C++ Driver may cause a length value to be interpreted incorrectly. When an application supplies an extremely large, non-terminated field name to the builder, the library may read memory outside the intended buffer and terminate the calling process. No authentication is required, but the calling application must pass the oversized name in a specific form.
Severity
5.1 (Medium)
CWE
- CWE-681 - Incorrect Conversion between Numeric Types
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MongoDB | C++ Driver |
Affected:
3.2.0 , < 4.5.2
(semver)
|
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CVE-2026-84970 (GCVE-0-2026-84970)
Vulnerability from cvelistv5 – Published: 2026-09-03 14:56 – Updated: 2026-09-03 15:17
VLAI
EPSS
VEX
Title
Heap over-read or silent misparse via 32-bit truncation of JSON length in BSON JSON parser
Summary
A numeric truncation weakness exists in the JSON parsing component of the MongoDB C++ Driver's BSON library. An actor who controls the text that an embedding application hands to the library's public JSON parsing interface, when that text is very large, can cause the library to read memory beyond the supplied buffer and return it to the caller, to silently accept only part of the input as a complete document, or to terminate the process. No MongoDB server, credentials, or non-default configuration is required; the effect is confined to the process that uses the library.
Severity
6.2 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 15:14 UTC
CWE
- CWE-681 - Incorrect Conversion between Numeric Types
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MongoDB | C++ Driver |
Affected:
3.2.0 , < 4.5.2
(semver)
|
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CVE-2026-81522 (GCVE-0-2026-81522)
Vulnerability from cvelistv5 – Published: 2026-08-27 18:32 – Updated: 2026-08-29 03:55
VLAI
EPSS
VEX
Title
Cross-tenant database retargeting via dot/NUL injection in namespace strings in the C++ Driver
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 00:00 UTC
CWE
- CWE-116 - Improper Encoding or Escaping of Output
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MongoDB | C++ Driver |
Affected:
3.0.0 , < 4.5.1
(semver)
|
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