{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-81522 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-81522 is a high-severity vulnerability in MongoDB C++ Driver, published on 27 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-2026-81522 and fix it if it is affected.\n\nWhat it is: CVE-2026-81522 is a high-severity vulnerability in MongoDB C++ Driver, published on 27 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-2026-81522 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-2026-81522/ (Markdown: https://insights.sbomify.com/CVE-2026-81522/index.md)","id":"CVE-2026-81522","markdown":"https://insights.sbomify.com/CVE-2026-81522/index.md","name":"CVE-2026-81522","record":{"aliases":["DEBIAN-CVE-2026-81522","UBUNTU-CVE-2026-81522"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"MongoDB C++ Driver","requires_auth":"low_privilege","summary":"Attackers can redirect database operations to other tenants via namespace injection, causing unauthorized data access and modification in applications using the MongoDB C++ Driver.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mongodb","cpe":[{"product":"c\\+\\+_driver","vendor":"mongodb"}],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-116","name":"Improper Encoding or Escaping of Output"}],"description":"A weakness in the MongoDB C++ Driver's handling of caller-supplied namespace identifiers allows special characters embedded in those identifiers. An application that builds a namespace identifier from untrusted input without validating it may therefore have its operation directed at a different target than intended. This can result in limited unauthorized read and write access to data belonging to another logical tenant of the affected application.","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":"Cross-tenant database retargeting via dot/NUL injection in namespace strings in the C++ Driver","id":"CVE-2026-81522","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"other","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Cross-tenant database retargeting via dot/NUL injection in namespace strings in libmongocrypt","id":"CVE-2026-81523"},"packages":[],"prev":{"headline":"Cross-database write retargeting via unvalidated dotted database name in Client.BulkWrite in the MongoDB Go Driver","id":"CVE-2026-81521"},"products":["C++ Driver"],"published":"2026-08-27","related":[{"cvss_score":6.1,"headline":"GridFS data disclosure and deletion via query-operator injection in file IDs in the MongoDB C++ Driver","id":"CVE-2026-88034","kev_date_added":null,"published":"2026-09-10"},{"cvss_score":5.9,"headline":"BSON element injection via NUL-embedded document keys in builder append","id":"CVE-2026-84966","kev_date_added":null,"published":"2026-09-03"},{"cvss_score":5.9,"headline":"Heap over-read or silent misparse via 32-bit truncation of JSON length in BSON JSON parser","id":"CVE-2026-84970","kev_date_added":null,"published":"2026-09-03"}],"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":"2026-08-29","vendors":["MongoDB"]},"summary":"Attackers can redirect database operations to other tenants via namespace injection, causing unauthorized data access and modification in applications using the MongoDB C++ Driver.","url":"https://insights.sbomify.com/CVE-2026-81522/"}