CVE-2026-88032

Application denial of service via cancellation race in reactive client-side encryption in MongoDB Java Driver

CVSS 4.0 8.2 HIGHCVSS 3.1 5.9 MEDIUMCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-88032

Published

A use-after-free in the reactive client-side encryption component of the MongoDB Java Driver can cause native resources to be freed while an affected encrypted operation is still using them when the operation is cancelled. A party able to cause such an operation to be cancelled may cause the hosting application process to terminate. Reaching the issue requires an affected reactive encryption configuration that retrieves KMS credentials on demand.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-88032

Published

Java Driver

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "MongoDB",
                    "product": "Java Driver",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "4.2.0",
                            "lessThan": "5.11.1",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

org.mongodb:mongodb-crypt Maven package

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "MongoDB",
                    "product": "org.mongodb:mongodb-crypt Maven package",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "1.4.0",
                            "lessThan": "5.11.1",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

org.mongodb:mongodb-driver-reactivestreams Maven package

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "MongoDB",
                    "product": "org.mongodb:mongodb-driver-reactivestreams Maven package",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "4.6.0",
                            "lessThan": "5.11.1",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON