{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-106429 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-106429 is a high-severity vulnerability in MongoDB libmongocrypt, published on 8 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-106429 and fix it if it is affected.\n\nWhat it is: CVE-2026-106429 is a high-severity vulnerability in MongoDB libmongocrypt, published on 8 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-106429 in the wild and no public exploit code.\n\nAffected product: MongoDB libmongocrypt. 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-2026-106429/ (Markdown: https://insights.sbomify.com/CVE-2026-106429/index.md)","id":"CVE-2026-106429","markdown":"https://insights.sbomify.com/CVE-2026-106429/index.md","name":"CVE-2026-106429","record":{"aliases":["DEBIAN-CVE-2026-106429","UBUNTU-CVE-2026-106429"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"MongoDB encryption library","requires_auth":"low_privilege","summary":"An integer underflow in libmongocrypt allows an authenticated user to cause a denial of service by triggering an allocation failure via malformed KMS endpoints.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mongodb","cpe":[],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-191","name":"Integer Underflow (Wrap or Wraparound)"}],"description":"An integer underflow in the KMS endpoint-parsing logic of MongoDB libmongocrypt can cause an allocation failure that terminates the application process. This can occur when an authenticated user modifies a key document in the key vault collection, or when an application accepts a KMS endpoint containing a colon after its path or query during key creation. The issue does not access memory outside its allocated bounds.","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":"Application denial of service via malformed KMS endpoint in MongoDB libmongocrypt","id":"CVE-2026-106429","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Query and rename target confusion via embedded NUL truncation in MongoDB C++ Driver","id":"CVE-2026-106430"},"packages":[],"prev":{"headline":"Out-of-bounds read in SCRAM response parsing in MongoDB C Driver","id":"CVE-2026-106428"},"products":["libmongocrypt"],"published":"2026-10-08","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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-08","vendors":["MongoDB"]},"summary":"An integer underflow in libmongocrypt allows an authenticated user to cause a denial of service by triggering an allocation failure via malformed KMS endpoints.","url":"https://insights.sbomify.com/CVE-2026-106429/"}