{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-114646 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-114646 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-114646 is a medium-severity vulnerability in MongoDB C# Driver, published on 22 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-114646 and fix it if it is affected.\n\nWhat it is: CVE-2026-114646 is a medium-severity vulnerability in MongoDB C# Driver, published on 22 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-114646 in the wild and no public exploit code.\n\nAffected product: MongoDB C# Driver. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-114646/ (Markdown: https://insights.sbomify.com/CVE-2026-114646/index.md)","id":"CVE-2026-114646","markdown":"https://insights.sbomify.com/CVE-2026-114646/index.md","name":"CVE-2026-114646","record":{"aliases":["GHSA-5chr-phc4-wcj2"],"analysis":null,"analysis_generated_by":null,"assigner":"mongodb","cpe":[],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-130","name":"Improper Handling of Length Parameter Inconsistency"}],"description":"A data-validation flaw exists in the BSON handling and binary serialization path of the MongoDB C# Driver. When an application constructs a raw or lazy BSON document object from externally supplied binary data, the driver does not verify that the size quantity declared inside that data matches the amount of data actually provided, and it copies the data onto the wire unchanged. An unauthenticated party who can supply binary content to such an application can thereby cause additional elements to be inserted into, or existing elements to be removed from, the database command the application issues, without needing any database credentials of their own. This can result in unauthorized modification of stored data and disclosure of data outside the intended scope of the application's request, bounded by the database privileges the application itself holds.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"NoSQL command injection via mismatched raw BSON length prefix written verbatim to the wire","id":"CVE-2026-114646","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"NoSQL operator injection via unvalidated replacement document in findOneAndReplace","id":"CVE-2026-114647"},"packages":[],"prev":{"headline":"Heap overflow via 32-bit length wrap of the URI username in Windows Kerberos auth message wrapping","id":"CVE-2026-114645"},"products":["C# Driver"],"published":"2026-10-22","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-22","vendors":["MongoDB"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-114646/"}