{"answers":{"affected":"1 open source package ship an affected version, including mongodb. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-18703 in the wild and no public exploit code.","fix":"Upgrade mongodb to a fixed version for your release line: 8.3.8 or 9.0.2.","what":"CVE-2026-18703 is a low-severity authentication bypass vulnerability in Mongodb Mongodb, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-18703 and fix it if it is affected.\n\nWhat it is: CVE-2026-18703 is a low-severity authentication bypass vulnerability in Mongodb Mongodb, published on 11 Aug 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-2026-18703 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- mongodb (Bitnami): affected from 8.2.0; fixed in 8.3.8, 9.0.2\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-2026-18703/ (Markdown: https://insights.sbomify.com/CVE-2026-18703/index.md)","id":"CVE-2026-18703","markdown":"https://insights.sbomify.com/CVE-2026-18703/index.md","name":"CVE-2026-18703","record":{"aliases":["BIT-mongodb-2026-18703","GHSA-h22h-g2cf-r8hr","MINI-jwrf-q9gw-h6r9","MINI-mfjm-h5rw-88wv","UBUNTU-CVE-2026-18703"],"analysis":{"component_type":"database","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"MongoDB Server","requires_auth":"low_privilege","summary":"Attackers with valid certificates can bypass disabled authentication mechanisms in MongoDB Server, undermining administrator-configured security restrictions.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mongodb","cpe":[{"product":"mongodb","vendor":"mongodb"}],"cvss":{"score":2.3,"severity":"low","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"}],"description":"An issue in MongoDB Server could allow a party with a valid client certificate and a corresponding user account to authenticate using a certificate-based authentication method, even when an administrator has configured the server to restrict authentication to other mechanisms. This could allow authentication through a method the administrator intended to disable.","ecosystems":["Bitnami"],"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":"Auth bypass in MongoDB Server","id":"CVE-2026-18703","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"mongodb:mongodb","products":["mongodb:mongodb"],"type":"auth_bypass","year":"2026"},"n_packages":1,"n_references":1,"next":{"headline":"Improper Authorization in MongoDB Aggregation Framework Allows Read-Only User to Perform Unauthorized Write Operations","id":"CVE-2026-18704"},"packages":[{"ecosystem":"Bitnami","fixed":["8.3.8","9.0.2"],"introduced":["8.2.0","9.0.0"],"last_affected":[],"package":"mongodb","purl":"pkg:bitnami/mongodb","source":"BIT-mongodb-2026-18703"}],"prev":{"headline":"Improper Authorization in MongoDB profile Command Allows Unauthorized Modification of Server-Wide Diagnostic Settings","id":"CVE-2026-18702"},"products":["MongoDB Server"],"published":"2026-08-11","related":[{"cvss_score":8.7,"headline":"MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency","id":"CVE-2025-14847","kev_date_added":"2025-12-29","published":"2025-12-19"},{"cvss_score":9.2,"headline":"Auth bypass in MongoDB Server","id":"CVE-2026-82067","kev_date_added":null,"published":"2026-09-08"},{"cvss_score":9.2,"headline":"MongoDB Improper Input Validation in Compute Mode External Data Processing Leading to Memory Corruption","id":"CVE-2026-13072","kev_date_added":null,"published":"2026-07-22"},{"cvss_score":9.1,"headline":"Denial of service in n/a","id":"CVE-2017-15535","kev_date_added":null,"published":"2017-11-01"},{"cvss_score":9,"headline":"Improper Authentication in MongoDB Intra-Cluster Connections Allows Credential Exposure","id":"CVE-2026-18691","kev_date_added":null,"published":"2026-08-11"},{"cvss_score":8.8,"headline":"MongoDB Server may allow successful untrusted connection","id":"CVE-2024-1351","kev_date_added":null,"published":"2024-03-07"},{"cvss_score":8.7,"headline":"Denial of service in MongoDB Server","id":"CVE-2026-82064","kev_date_added":null,"published":"2026-09-08"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"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":"2026-08-11","vendors":["MongoDB"]},"summary":"Attackers with valid certificates can bypass disabled authentication mechanisms in MongoDB Server, undermining administrator-configured security restrictions.","url":"https://insights.sbomify.com/CVE-2026-18703/"}