A weakness in the BSON library's handling of a specialized binary vector data type allows an arithmetic wraparound when computing the number of elements described by an oversized attacker-supplied value. On builds where the platform word size is 32 bits, an application that parse...
Product
debian/mongo-c-driver vulnerabilities
35 published CVES affecting debian/mongo-c-driver, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
- Total
- 35
- Critical
- 1
- High
- 11
- Medium
- 20
- Low
- 1
- Unscored
- 2
- CISA KEV
- 0
Latest debian/mongo-c-driver CVEs
Newest publication first · page 1 of 2
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MediumCVSS 6.3 EPSS 0.23%
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HighCVSS 8.7 EPSS 0.36%
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...
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HighCVSS 7.1 EPSS 0.25%
The MongoDB C Driver does not validate the type or format of a namespace field returned by the server in a query response. A MongoDB endpoint that a client application connects to, without needing any credentials, can return a malformed value in that field. This causes the client...
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MediumCVSS 6.0 EPSS 0.32%
A memory-initialization flaw in the legacy GridFS file handling of the MongoDB C Driver can cause uninitialized process memory to be treated as valid file content and stored on the server. A database user holding ordinary write access to a shared storage area can arrange conditio...
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HighCVSS 8.7 EPSS 0.39%
A memory management flaw in the MongoDB C Driver's handling of compressed responses may cause the client library to hold on to memory that is never released. An unauthenticated party that controls the database endpoint a client application connects to may cause repeated, unbounde...
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MediumCVSS 5.7 EPSS 0.17%
A 32-bit integer wraparound in the MongoDB C Driver's Windows-only Kerberos/SSPI authentication code can cause an undersized heap buffer to be allocated when an excessively long credential value is supplied in the client's connection configuration. A party able to control that cl...
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CVE-2026-106438 Silent Decimal128 value corruption via incorrect exactness check in MongoDB C Driver
PublishedMediumCVSS 5.1 EPSS 0.14%An incorrect calculation in Decimal128 string parsing in the MongoDB C Driver can accept certain over-precision inputs containing leading zeros instead of rejecting them. This produces a value different from the supplied text. An actor who can provide a decimal string to an embed...
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MediumCVSS 5.9 EPSS 0.13%
The BSON buffer-reservation API in the MongoDB C Driver can record a length smaller than the five-byte BSON minimum. Later append or comparison operations can underflow unsigned length calculations and read or write outside the document buffer. An actor who can influence the leng...
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CVE-2026-106431 One-byte heap buffer overflow in BSON bulk document writer in MongoDB C Driver
PublishedMediumCVSS 5.9 EPSS 0.10%An off-by-one error in the BSON bulk document writer in the MongoDB C Driver can write one zero byte immediately past a heap allocation when a document ends at a specific buffer boundary. An actor who can influence the size of documents serialized by an embedding application can...
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MediumCVSS 6.3 EPSS 0.27%
An out-of-bounds read in SCRAM authentication response parsing in the MongoDB C Driver can read one byte beyond a fixed-size buffer when processing a malformed server-final message. A server or network intermediary able to provide this message before server-signature verification...
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CVE-2026-96746 Heap buffer overflow via mid-scan command list growth in client topology monitoring
PublishedHighCVSS 8.3 EPSS 0.52%An out-of-bounds write in the connection-monitoring logic of the MongoDB C Driver may allow an unauthenticated party who controls name resolution and the responses of the hosts named in a client's connection string to write beyond the end of a heap buffer. This may cause the appl...
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MediumCVSS 6.9 EPSS 0.40%
A missing lower-bound validation in the bson_new_from_buffer() function of libbson allows an integer underflow when processing BSON data with a zero-length prefix. The function reads a 32-bit document length from the input buffer but does not verify that the value is at least 5 (...
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MediumCVSS 6.3 EPSS 0.32%
A flaw in libmongoc's SCRAM authentication implementation caused the client to continue the authentication handshake and transmit the client proof even when a nonce mismatch was detected in the server's first message. An unauthorized party with a man-in-the-middle position could...
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CriticalCVSS 9.2 EPSS 0.47%
A heap-based buffer overflow exists in the TLS transport layer of the MongoDB C Driver when built with the Windows platform TLS backend. A remote endpoint that the client connects to can cause the driver to write uncontrolled data outside the bounds of a heap allocation while pro...
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MediumCVSS 6.1 EPSS 0.27%
Improper neutralization of special elements in data query logic in the GridFS component of the MongoDB C Driver can cause a caller-supplied structured file identifier to be interpreted as a query condition rather than as a literal identifier. An authenticated user who can influen...
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MediumCVSS 5.7 EPSS 0.10%
A size check in the client-side authentication path of the MongoDB C Driver can wrap around, so an unusually large user-name value is accepted and copied past the end of a small buffer. A party able to set the driver's connection settings may cause the application that embeds the...
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MediumCVSS 6.3 EPSS 0.31%
An incorrect numeric conversion in the JSON parsing component of the MongoDB C Driver's BSON library may cause an unusually large text value to be silently shortened, or the corresponding field to be omitted, while the parsing operation still reports success and returns no error....
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HighCVSS 8.2 EPSS 0.26%
A double free in the OpenSSL-based TLS certificate revocation checking path of the MongoDB C Driver can be reached by a TLS endpoint that the client already trusts. During the handshake, specially formed certificate data can cause the same heap object to be released twice. An una...
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CVE-2026-84965 Heap write primitive via size round-up wrap during JSON parsing on 32-bit builds
PublishedMediumCVSS 5.9 EPSS 0.13%An integer wraparound in an allocation size calculation in the BSON library's JSON parsing code can cause a buffer to be released while a following copy operation still writes through the stale pointer. On builds where sizes are 32 bits, an unauthenticated party able to supply a...
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MediumCVSS 6.3 EPSS 0.27%
A memory-handling error in the BSON-to-JSON conversion helpers of the MongoDB C Driver can write a small number of bytes past the end of a heap buffer when a binary field is encoded and the output is cut short at a caller-configured length limit. A party who supplies the document...
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MediumCVSS 5.3 EPSS 0.28%
A weakness in the MongoDB C Driver allows special elements in caller-supplied database and collection name components to pass without sanitization when the driver composes the target namespace for an operation. An application that incorporates untrusted input into these name comp...
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CVE-2026-9100 Heap memory out of bounds read and crash in C Driver legacy GridFS file reader
PublishedMediumCVSS 6.0 EPSS 0.30%The MongoDB C Driver's legacy GridFS API accepts malformed file metadata from the database without adequate validation. Crafted documents in a GridFS collection may cause any application that reads those files via the legacy API to either crash (via a division-by-zero) or silentl...
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HighCVSS 8.6 EPSS 0.13%
The MongoDB C Driver's Cyrus SASL integration performs unsafe string copying during username canonicalization, enabling a heap buffer overflow before any authentication or network traffic. This may be triggered by passing untrusted input in the username of a MongoDB URI with auth...
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MediumCVSS 5.3 EPSS 0.19%
The bson_validate function may return early on specific inputs and incorrectly report success. This behavior could result in skipping validation for BSON data, allowing malformed or invalid UTF-8 sequences to bypass validation and be processed incorrectly. The issue may affect ap...
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CVE-2026-4359 Heap-buffer-over-read in _mongoc_http_send via strstr on non-null-terminated buffer
PublishedLowCVSS 2.0 EPSS 0.25%A compromised third party cloud server or man-in-the-middle attacker could send a malformed HTTP response and cause a crash in applications using the MongoDB C driver.
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.