{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-106438 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-106438 is a medium-severity vulnerability in MongoDB C Driver, published on 8 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-106438 and fix it if it is affected.\n\nWhat it is: CVE-2026-106438 is a medium-severity vulnerability in MongoDB C Driver, published on 8 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-106438 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-2026-106438/ (Markdown: https://insights.sbomify.com/CVE-2026-106438/index.md)","id":"CVE-2026-106438","markdown":"https://insights.sbomify.com/CVE-2026-106438/index.md","name":"CVE-2026-106438","record":{"aliases":["DEBIAN-CVE-2026-106438","UBUNTU-CVE-2026-106438"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"MongoDB C Driver","requires_auth":"none","summary":"Attackers can cause data corruption by providing malformed decimal strings to applications using the MongoDB C Driver, leading to incorrect numeric values being stored.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mongodb","cpe":[{"product":"c_driver","vendor":"mongodb"}],"cvss":{"score":5.1,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-682","name":"Incorrect Calculation"}],"description":"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 embedding application, including through Extended JSON parsing, can cause the application to store or use an incorrect numeric value.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Silent Decimal128 value corruption via incorrect exactness check in MongoDB C Driver","id":"CVE-2026-106438","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"other","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Hydra: Mutable instantiate policy sets allow target blocklist bypass","id":"CVE-2026-106439"},"packages":[],"prev":{"headline":"Out-of-bounds read and write via undersized BSON buffer reservation in MongoDB C Driver","id":"CVE-2026-106437"},"products":["C Driver"],"published":"2026-10-08","related":[{"cvss_score":9.2,"headline":"Heap overflow via oversized decrypted TLS record sequence in Windows Secure Channel stream","id":"CVE-2026-93393","kev_date_added":null,"published":"2026-09-17"},{"cvss_score":8.6,"headline":"MongoDB C Driver Cyrus SASL Canonicalization Buffer Overflow","id":"CVE-2026-6691","kev_date_added":null,"published":"2026-05-06"},{"cvss_score":8.2,"headline":"Heap corruption via OCSP request double free from crafted multi-URL certificate in TLS client","id":"CVE-2026-84964","kev_date_added":null,"published":"2026-09-03"},{"cvss_score":7.3,"headline":"Accessing Untrusted Directory May Allow Local Privilege Escalation","id":"CVE-2024-7553","kev_date_added":null,"published":"2024-08-07"},{"cvss_score":6.9,"headline":"Integer Underflow → Heap Out-of-Bounds Read in `bson_new_from_buffer()","id":"CVE-2026-93395","kev_date_added":null,"published":"2026-09-17"},{"cvss_score":6.9,"headline":"Bulk write with options may read invalid memory","id":"CVE-2025-12119","kev_date_added":null,"published":"2025-11-18"},{"cvss_score":6.3,"headline":"libmongoc SCRAM client nonce-validation bypass","id":"CVE-2026-93394","kev_date_added":null,"published":"2026-09-17"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-08","vendors":["MongoDB"]},"summary":"Attackers can cause data corruption by providing malformed decimal strings to applications using the MongoDB C Driver, leading to incorrect numeric values being stored.","url":"https://insights.sbomify.com/CVE-2026-106438/"}