{"answers":{"affected":"3 open source packages ship an affected version, including go.mongodb.org/mongo-driver. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-20329 in the wild and no public exploit code.","fix":"Upgrade go.mongodb.org/mongo-driver to 1.5.1 or later.","what":"CVE-2021-20329 is a medium-severity vulnerability in MongoDB Go Driver, published on 10 Jun 2021. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-20329 and fix it if it is affected.\n\nWhat it is: CVE-2021-20329 is a medium-severity vulnerability in MongoDB Go Driver, published on 10 Jun 2021. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-20329 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- go.mongodb.org/mongo-driver (Go): affected all versions; fixed in 1.5.1\n- go.mongodb.org/mongo-driver (Go): affected all versions; fixed in 1.5.1\n- go.mongodb.org/mongo-driver (Go): affected all versions; fixed in 1.5.1\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-2021-20329/ (Markdown: https://insights.sbomify.com/CVE-2021-20329/index.md)","id":"CVE-2021-20329","markdown":"https://insights.sbomify.com/CVE-2021-20329/index.md","name":"CVE-2021-20329","record":{"aliases":["GHSA-f6mq-5m25-4r72","GO-2021-0112"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"MongoDB Go Driver","requires_auth":"low_privilege","summary":"A malicious user can inject additional fields into BSON documents by exploiting improper cstring validation in the MongoDB Go Driver.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mongodb","cpe":[{"product":"go_driver","vendor":"mongodb"}],"cvss":{"score":6.8,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"},{"id":"CWE-1287","name":"Improper Validation of Specified Type of Input"}],"description":"Specific cstrings input may not be properly validated in the MongoDB Go Driver when marshalling Go objects into BSON. A malicious user could use a Go object with specific string to potentially inject additional fields into marshalled documents. This issue affects all MongoDB GO Drivers prior to and including 1.5.0.","ecosystems":["Go"],"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":"Specific cstrings input may not be properly validated in the Go Driver","id":"CVE-2021-20329","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"other","year":"2021"},"n_packages":3,"n_references":1,"next":{"headline":"Specific replication command with malformed oplog entries can crash secondaries","id":"CVE-2021-20330"},"packages":[{"ecosystem":"Go","fixed":["1.5.1"],"introduced":["0"],"last_affected":[],"package":"go.mongodb.org/mongo-driver","purl":null,"source":"GHSA-f6mq-5m25-4r72"},{"ecosystem":"Go","fixed":["1.5.1"],"introduced":["0"],"last_affected":[],"package":"go.mongodb.org/mongo-driver","purl":"pkg:golang/go.mongodb.org/mongo-driver","source":"GHSA-f6mq-5m25-4r72"},{"ecosystem":"Go","fixed":["1.5.1"],"introduced":["0"],"last_affected":[],"package":"go.mongodb.org/mongo-driver","purl":"pkg:golang/go.mongodb.org/mongo-driver","source":"GO-2021-0112"}],"prev":{"headline":"MongoDB Java driver client-side field level encryption not verifying KMS host name","id":"CVE-2021-20328"},"products":["MongoDB Go Driver"],"published":"2021-06-10","related":[{"cvss_score":8.2,"headline":"Application denial of service via integer overflow in BSON value-length validation in MongoDB Go Driver","id":"CVE-2026-107324","kev_date_added":null,"published":"2026-10-08"},{"cvss_score":8.2,"headline":"Application denial of service via missing BSON array length validation in MongoDB Go Driver","id":"CVE-2026-107325","kev_date_added":null,"published":"2026-10-08"},{"cvss_score":7.1,"headline":"Cross-database write retargeting via unvalidated dotted database name in Client.BulkWrite in the MongoDB Go Driver","id":"CVE-2026-81521","kev_date_added":null,"published":"2026-08-27"},{"cvss_score":6.1,"headline":"GridFS data deletion via query-operator injection in file IDs in the MongoDB Go Driver","id":"CVE-2026-88031","kev_date_added":null,"published":"2026-09-10"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-09-16","vendors":["MongoDB Inc."]},"summary":"A malicious user can inject additional fields into BSON documents by exploiting improper cstring validation in the MongoDB Go Driver.","url":"https://insights.sbomify.com/CVE-2021-20329/"}