CVE-2026-81528

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Source
https://cve.org/CVERecord?id=CVE-2026-81528
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-81528.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-81528
Published
2026-08-27T18:32:30Z
Modified
2026-10-01T03:47:39Z
Severity
  • 5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
NoSQL injection via array replacement bypassing update shape validation in driver write path
Details

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.

Database specific 
{
    "cna_assigner": "mongodb",
    "cwe_ids": [
        "CWE-943"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81528.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "2.9.0"
                },
                {
                    "fixed": "3.11.1"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/mongodb/mongo-csharp-driver

Affected ranges

Type
GIT
Repo
https://github.com/mongodb/mongo-csharp-driver
Events
Introduced
569905ff5e778c38ea19d9d0392496a83e1704ed
Fixed
682ad0faea0a03648ee2c4ca8f48c3b04f4c9ab8
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:mongodb:c\\#_driver:*:*:*:*:*:mongodb:*:*",
    "extracted_events": [
        {
            "introduced": "2.10.0"
        },
        {
            "fixed": "3.11.1"
        }
    ],
    "source": "CPE_RANGE"
}

Affected versions

v2.*
v2.10.0
v2.11.0
v2.11.0-beta1
v2.11.0-beta2
v2.12.0
v2.12.0-beta1
v2.13.0
v2.13.0-beta1
v2.14.0
v2.14.0-beta1
v2.15.0
v2.16.0
v2.17.0
v2.18.0
v2.19.0
v2.20.0
v2.21.0
v2.22.0
v2.23.0
v2.23.1
v2.24.0
v2.25.0
v2.26.0
v2.27.0
v2.28.0
v3.*
v3.0.0
v3.1.0
v3.10.0
v3.11.0
v3.2.0
v3.2.1
v3.3.0
v3.4.0
v3.5.0
v3.6.0
v3.7.0
v3.7.1
v3.8.0
v3.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-81528.json"