{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-93393 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-93393 is a critical memory corruption vulnerability in MongoDB Inc. C Driver, published on 17 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-93393 and fix it if it is affected.\n\nWhat it is: CVE-2026-93393 is a critical memory corruption vulnerability in MongoDB Inc. C Driver, published on 17 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-93393 in the wild and no public exploit code.\n\nAffected product: MongoDB Inc. 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-2026-93393/ (Markdown: https://insights.sbomify.com/CVE-2026-93393/index.md)","id":"CVE-2026-93393","markdown":"https://insights.sbomify.com/CVE-2026-93393/index.md","name":"CVE-2026-93393","record":{"aliases":["DEBIAN-CVE-2026-93393","GHSA-x65h-hw7w-mq6w","UBUNTU-CVE-2026-93393"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","data_read","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"MongoDB C Driver","requires_auth":"none","summary":"A remote attacker can trigger a heap overflow in the MongoDB C Driver's Windows TLS backend, potentially leading to code execution or information disclosure.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mongodb","cpe":[{"product":"c_driver","vendor":"mongodb"}],"cvss":{"score":9.2,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"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 processing incoming encrypted traffic after the TLS handshake completes. No authentication or user interaction is required, because the affected processing occurs before any application-level authentication completes. Triggering this issue may lead to memory corruption in the client process, disclosure of adjacent heap memory, or termination of the process.","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":"Heap overflow via oversized decrypted TLS record sequence in Windows Secure Channel stream","id":"CVE-2026-93393","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"libmongoc SCRAM client nonce-validation bypass","id":"CVE-2026-93394"},"packages":[],"prev":{"headline":"File upload in Printcart Store – Web to Print Product Designer for WooCommerce","id":"CVE-2026-93388"},"products":["C Driver"],"published":"2026-09-17","related":[{"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":"total"},"state":"PUBLISHED","updated":"2026-09-18","vendors":["MongoDB Inc."]},"summary":"A remote attacker can trigger a heap overflow in the MongoDB C Driver's Windows TLS backend, potentially leading to code execution or information disclosure.","url":"https://insights.sbomify.com/CVE-2026-93393/"}