Server crash via malformed binary diff passed to $_internalApplyOplogUpdate.
Priority LOW 31CWE-1287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
The $_internalApplyOplogUpdate aggregation pipeline stage can be used to execute a document diff containing a malformed binary diff to return memory out-of-bounds or crash the server. $_internalApplyOplogUpdate can be executed by any authenticated user with access to the aggregate command.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00298 22nd percentileScored 2026-11-07
Fix Fixed MongoDB Server (MongoDB): 8.3.3, 8.2.10, 8.0.24 +1
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 | MongoDB Server | 8.3.0 to before 8.3.3; 8.2.0 to before 8.2.10; 8.0.0 to before 8.0.24; 7.0.0 to before 7.0.35 | 8.3.3, 8.2.10, 8.0.24, 7.0.35 | Patch available | CNA |
- MongoDB Server VendorMongoDB Affected 8.3.0 to before 8.3.3; 8.2.0 to before 8.2.10; 8.0.0 to before 8.0.24; 7.0.0 to before 7.0.35 Fixed in 8.3.3, 8.2.10, 8.0.24, 7.0.35 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:* | before 7.0.35; 8.0.0 to before 8.0.24; 8.2.0 to before 8.2.10; 8.3.0 to before 8.3.3 | Vulnerable | MongoDB |
- cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:* Versions before 7.0.35; 8.0.0 to before 8.0.24; 8.2.0 to before 8.2.10; 8.3.0 to before 8.3.3 Vulnerable ·MongoDB
Remediation
- Fix · CNA MongoDB Server (MongoDB) Fixed in 8.3.3, 8.2.10, 8.0.24, 7.0.35
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
MongoDB Server 7.0.35, 8.0.24 and 2 more versions
9 records Highest priority Priority MEDIUM 1 MEDIUM, 8 LOW
Other records, highest priority first
- TI-2026-08537 Unbounded recursion in BSONColumn interleaved-reference causes pre-auth stack overflowPriority MEDIUM 44
- TI-2026-08549 GeometryCollection with strict-winding polygon causes server crash during 2dsphere index key generationPriority LOW 31
- TI-2026-08547 Metadata name collision on $-prefixed fields causes post-auth server crashPriority LOW 31
Timeline
- 2026-10-02 Threatist record created from CVE-2026-9753
- 2026-10-03 Alias added: GHSA-j72p-fv5p-4r63
References
More Mongodb vulnerabilities
- TI-2025-13542 Zlib compressed protocol header length confusion may allow memory read KEVCVSS 4.0HIGH 8.7
- TI-2013-01669 MongoDB before 2.0.9 and 2.2.x before 2.2.4 does not properly validate requests to the… CVSS 2.0MEDIUM 6.0
- TI-2026-56639 Uncontrolled Resource Consumption in MongoDB Sharded Cluster Router Allows Unauthenticated Denial of Service CVSS 4.0HIGH 8.7
- TI-2026-56628 Reachable assertion in MongoDB Server CVSS 4.0HIGH 8.7
- TI-2026-15322 Improper Input Validation in MongoDB Aggregation Framework Allows Unauthenticated Denial of Service on mongos CVSS 4.0HIGH 8.7
- TI-2026-08537 Unbounded recursion in BSONColumn interleaved-reference causes pre-auth stack overflow CVSS 4.0HIGH 8.7
Sources
- CVE-2026-9753 · CVE Program
- CVE-2026-9753 · NVD
- FIRST EPSS
- GHSA-j72p-fv5p-4r63 · GitHub Advisory Database · CC BY 4.0
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