{"id":"CVE-2026-114653","summary":"Silent client-side encryption bypass via unescaped field-name regex in CSFLE schema builder","details":"A client-side encryption schema construction component in the MongoDB C# Driver places caller-supplied field identifiers into a position that is interpreted as a pattern expression, without normalizing or validating them. As a result, an application that designates certain fields for client-side field-level encryption may have the protection silently fail to apply, so data intended to be encrypted is stored and returned in cleartext; conversely, the rule may apply more broadly than intended. No user action is required to cause the condition, and any party with ordinary read access to the stored data — without possession of the encryption keys — can observe the unprotected values.","aliases":["GHSA-ggmm-wc43-vphh"],"modified":"2026-10-23T10:45:27.216105464Z","published":"2026-10-22T19:13:58.414Z","database_specific":{"cna_assigner":"mongodb","cwe_ids":["CWE-185"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114653.json","unresolved_ranges":[{"extracted_events":[{"range":[{"introduced":"3.5.0"},{"fixed":"3.13.0"}],"source":"AFFECTED_FIELD","strategy":"StandardRange"}]}]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114653.json"},{"type":"WEB","url":"https://github.com/mongodb/mongo-csharp-driver/releases/tag/v3.13.0"},{"type":"ADVISORY","url":"https://github.com/mongodb/mongo-csharp-driver/security/advisories/GHSA-ggmm-wc43-vphh"},{"type":"WEB","url":"https://jira.mongodb.org/browse/CSHARP-6174"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-114653"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mongodb/mongo-csharp-driver","events":[{"introduced":"0"},{"fixed":"0f6c2b978ad14d38924a78f271875e148af4e053"}],"database_specific":{"extracted_events":[{"source":"REFERENCES_TAG","original_tag":"v3.13.0","range":[{"fixed":"0f6c2b978ad14d38924a78f271875e148af4e053"}]}]}}],"versions":["v3.12.0","v3.11.2","v3.11.1","v3.11.0","v3.10.0","v3.9.0","v3.8.0","v3.7.1","v3.7.0","v3.6.0","v3.5.0","v3.4.0","v3.3.0","v3.2.1","v3.2.0","v3.1.0","v3.0.0","v2.28.0","v2.27.0","v2.26.0","v2.25.0","v2.24.0","v2.23.1","v2.23.0","v2.22.0","v2.21.0","v2.20.0","v2.19.0","v2.18.0","v2.17.0","v2.16.0","v2.15.0","v2.14.0","v2.14.0-beta1","v2.13.0","v2.13.0-beta1","v2.12.0","v2.12.0-beta1","v2.11.0","v2.11.0-beta2","v2.11.0-beta1","v2.10.0","v2.10.0-beta1","v2.9.1","v2.9.0","v2.9.0-beta2","v2.9.0-beta1","v2.7.0","v2.7.0-beta1","v2.5.0","v2.4.4","v2.4.3","v2.4.2","v2.4.1","v2.4.0","v2.4.0-beta1","v2.3.0","v2.3.0-rc1","v2.3.0-beta1","v2.2.1","v2.2.0","v2.2.0-rc0","v2.1.0-rc1","v2.1.0-rc0","v2.0.0","v2.0.0-rc0","v2.0.0-beta4","v2.0.0-beta3","v2.0.0-beta2","v2.0.0-beta1","v1.9.0","v1.9.0-rc1","v1.9.0-rc0","v1.8.2.34","v1.8.1.20","v1.8.0.124","v1.7.0.4714","v1.6.1.4678","v1.6.0.4624","v1.6.0rc0","v1.5.0.4566","v1.4.2.4500","v1.4.1.4490","v1.4.0.4468","v1.3.0.4309","v1.2.0.4274","v1.1.0.4184","v1.0.0.4098","v0.11.0.4042","v0.9.0.3992","v0.7.0.3959","v0.5.0.3940"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-114653.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"}]}