Bug 2548211 (CVE-2026-107325)

Summary: CVE-2026-107325 go.mongodb.org/mongo-driver: MongoDB Go Driver: Denial of Service via malformed BSON array input
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 the MongoDB Go Driver due to improper validation of Binary JSON (BSON) array lengths. An unauthenticated remote attacker can exploit this vulnerability by supplying specially crafted BSON array data to an affected application. When the application validates this malformed input, it triggers an out-of-bounds indexing error and application crash, leading to a Denial of Service (DoS).
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Description OSIDB Bzimport 2026-10-08 19:12:45 UTC 
Improper validation of a BSON array length in the MongoDB Go Driver can cause an out-of-bounds index and runtime panic when an application calls bson.RawArray.Validate or bsoncore.Array.Validate on a malformed four-byte array. An unauthenticated actor who can supply raw BSON array data to an affected application may terminate an unprotected application process, causing a denial of service. No confidentiality or integrity impact has been identified.