CVE-2026-81528 - NoSQL injection via array replacement bypassing update shape validation in driver write path

CVE-2026-81528 - NoSQL injection via array replacement bypassing update shape validation in driver write path

https://cvefeed.io/rssfeed/latest.atom / Fri, 08/28/2026 - 01:28
CVE ID :CVE-2026-81528
Published : Aug. 27, 2026, 8:18 p.m. | 2 hours, 11 minutes ago
Description :A MongoDB C# driver document-replacement code path omits the element-name/shape validation that the equivalent write paths apply, so a value supplied as a replacement is forwarded to the server without neutralization of query-language special elements. An application that passes untrusted, loosely-typed input as a replacement value therefore allows that input to be interpreted by the database as update logic rather than as data, executing under the application's own database credentials. Applications using strongly-typed document mappings are not affected.
Severity: 5.4 | MEDIUM
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