Application denial of service via cancellation race in reactive client-side encryption in MongoDB Java Driver
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 2 fixed, 2 without a fix
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| MongoDB | Java Driver | 4.2.0 to before 5.11.1 | 5.11.1 | Patch available | CNA |
| MongoDB | org.mongodb:mongodb-crypt Maven package | 1.4.0 to before 5.11.1 | 5.11.1 | Patch available | CNA |
| MongoDB | org.mongodb:mongodb-driver-reactivestreams Maven package | 4.6.0 to before 5.11.1 | 5.11.1 | Patch available | CNA |
- Java Driver VendorMongoDB Affected 4.2.0 to before 5.11.1 Fixed in 5.11.1 Patch available CNA
- org.mongodb:mongodb-crypt Maven package VendorMongoDB Affected 1.4.0 to before 5.11.1 Fixed in 5.11.1 Patch available CNA
- org.mongodb:mongodb-driver-reactivestreams Maven package VendorMongoDB Affected 4.6.0 to before 5.11.1 Fixed in 5.11.1 Patch available CNA
Remediation
- Fix · CNA Java Driver (MongoDB) Fixed in 5.11.1
- Fix · CNA org.mongodb:mongodb-crypt Maven package (MongoDB) Fixed in 5.11.1
- Fix · CNA org.mongodb:mongodb-driver-reactivestreams Maven package (MongoDB) Fixed in 5.11.1
Red Hat 2 advisories
- RHSA-2026:83520 Released 2026-10-15 · Red Hat rating ImportantRed Hat build of Quarkus 3.33.4 release and security update
- Red Hat build of Quarkus 3.33.4.redhat at.yawk.lz4.lz4-java-1.11.1.rhel8-redhat-00001.jar, com.fasterxml.jackson.core.jackson-core-2.21.7.redhat-00001.jar, com.fasterxml.jackson.core.jackson-databind-2.21.7.redhat-00001.jar +10
- RHSA-2026:83082 Released 2026-10-15 · Red Hat rating ImportantRed Hat build of Quarkus 3.27.6 release and security update
- Red Hat build of Quarkus 3.27.6.redhat at.yawk.lz4.lz4-java-1.11.1.rhel8-redhat-00001.jar, com.fasterxml.jackson.core.jackson-core-2.21.7.redhat-00001.jar, com.fasterxml.jackson.core.jackson-databind-2.21.7.redhat-00001.jar +11
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
MongoDB Java Driver 5.11.1
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-60058 GridFS data disclosure and deletion via query-operator injection in file IDs in the MongoDB Java DriverPriority LOW 28
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Exploit Intelligence | Affected | No fix yet: Fix deferred |
| Red Hat build of Apache Camel 4 for Quarkus 3 | Affected | No fix yet: Fix deferred |
| Red Hat build of Quarkus 3.27.6.redhat | Fixed | RHSA-2026:83082 |
| Red Hat build of Quarkus 3.33.4.redhat | Fixed | RHSA-2026:83520 |
Not affected: 3 products
- Red Hat Fuse 7
- Red Hat build of Quarkus 3.27.6.redhat
- Red Hat build of Quarkus 3.33.4.redhat
Timeline
- 2026-10-02 Threatist record created from CVE-2026-88032
- 2026-10-03 Alias added: GHSA-38pq-38pp-9f4m
- 2026-10-16 Fix available: RHSA-2026:83520 · Red Hat
- 2026-10-16 Fix available: RHSA-2026:83082 · Red Hat
- 2026-10-16 Fix available: Red Hat build of Quarkus 3.27.6.redhat, Red Hat build of Quarkus 3.33.4.redhat · Red Hat
References
More MongoDB Java Driver vulnerabilities
- TI-2026-15335 Cleartext Storage of Sensitive Information in MongoDB Driver Logging During Client Initialization CVSS 4.0HIGH 8.2
- TI-2021-03616 MongoDB Java driver client-side field level encryption not verifying KMS host name CVSS 3.1MEDIUM 6.8
- TI-2026-60058 GridFS data disclosure and deletion via query-operator injection in file IDs in the MongoDB Java Driver CVSS 4.0MEDIUM 6.1
Sources
- CVE-2026-88032 · CVE Program
- CVE-2026-88032 · NVD
- FIRST EPSS
- GHSA-38pq-38pp-9f4m · GitHub Advisory Database · CC BY 4.0
- CVE-2026-88032 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences