{"schema":"threatline.record/2","record":{"id":"CVE-2026-114653","aliases":["GHSA-ggmm-wc43-vphh"],"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.","categories":["Databases"],"product":"C# Driver","vendor":"MongoDB","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-114653","source_modified_at":"2026-10-22T21:25:36.721Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"C# Driver","vendor":"MongoDB","versions":[{"lessThan":"3.13.0","status":"affected","version":"3.5.0","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"GitHub Advisory Database","source_url":"https://github.com/mongodb/mongo-csharp-driver/security/advisories/GHSA-ggmm-wc43-vphh","source_modified_at":"2026-10-22T21:10:26Z","fetched_at":"2026-10-23T18:58:35.272684Z","package":{"ecosystem":"nuget","name":"MongoDB.Driver.Encryption"},"range":">= 3.5.0, < 3.13.0"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-114653","source_modified_at":"2026-10-22T21:25:36.721Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"C# Driver","ecosystem":null},"version":"3.13.0","basis":"first unaffected version stated in the CVE record"},{"source":"GitHub Advisory Database","source_url":"https://github.com/mongodb/mongo-csharp-driver/security/advisories/GHSA-ggmm-wc43-vphh","source_modified_at":"2026-10-22T21:10:26Z","fetched_at":"2026-10-23T18:58:35.272684Z","package":{"ecosystem":"nuget","name":"MongoDB.Driver.Encryption"},"version":"3.13.0"}],"cvss":7.1,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00214,"percentile":0.11153,"score_date":"2026-10-23"},"published_at":"2026-10-22T19:13:58.414Z","modified_at":"2026-10-22T21:25:36.721Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-114653","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-22T21:25:36.721Z"},{"source":"GitHub Advisory Database","url":"https://github.com/mongodb/mongo-csharp-driver/security/advisories/GHSA-ggmm-wc43-vphh","fetched_at":"2026-10-23T18:58:35.272684Z","source_modified_at":"2026-10-22T21:10:26Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-114653","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","GitHub Advisory Database","EPSS"],"references":[{"source":"CVE List","url":"https://jira.mongodb.org/browse/CSHARP-6174"},{"source":"CVE List","url":"https://github.com/mongodb/mongo-csharp-driver/releases/tag/v3.13.0"},{"source":"CVE List","url":"https://github.com/mongodb/mongo-csharp-driver/security/advisories/GHSA-ggmm-wc43-vphh"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"vendor and product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-22T21:25:36.721Z","content_hash":"e8c9011d9ecf99e7fa635e348affcbd7660db0dbcb5e2cc202222b996881e99f"}}