{"cve":"CVE-2019-17426","nvd":{"published":"2019-10-10T02:05:46.833","modified":"2026-06-17T02:23:55.950","status":"Modified","description":"Automattic Mongoose through 5.7.4 allows attackers to bypass access control (in some applications) because any query object with a _bsontype attribute is ignored. For example, adding \"_bsontype\":\"a\" can sometimes interfere with a query filter. NOTE: this CVE is about Mongoose's failure to work around this _bsontype special case that exists in older versions of the bson parser (aka the mongodb/js-bson project).","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1},"cwes":[],"references":["https://github.com/Automattic/mongoose/commit/f3eca5b94d822225c04e96cbeed9f095afb3c31c","https://github.com/Automattic/mongoose/issues/8222","https://github.com/Automattic/mongoose/commit/f3eca5b94d822225c04e96cbeed9f095afb3c31c","https://github.com/Automattic/mongoose/issues/8222"],"products":["mongoosejs:mongoose"],"source":"nvd","synced_at":"2026-10-19T20:59:10.855360465+00:00"},"epss":{"cve":"CVE-2019-17426","score":0.01497,"percentile":0.74209,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-8687-vv9j-hgph","url":"https://osv.dev/vulnerability/GHSA-8687-vv9j-hgph","summary":"Improper Input Validation in Automattic Mongoose","modified":"2023-11-29T22:07:26Z","packages":[{"ecosystem":"npm","name":"mongoose","purl":"pkg:npm/mongoose","ranges":[">=5.0.0 <5.7.5"],"fixed":["5.7.5"]},{"ecosystem":"npm","name":"mongoose","purl":"pkg:npm/mongoose","ranges":["<4.13.21"],"fixed":["4.13.21"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}