CVE-2026-1850— An authorized user may disable the MongoDB server by issuing a certain type of complex query due to boolean expression simplification
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I. Basic Information for CVE-2026-1850
Vulnerability Information
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Vulnerability Title
An authorized user may disable the MongoDB server by issuing a certain type of complex query due to boolean expression simplification
Source: NVD (National Vulnerability Database)
Vulnerability Description
Complex queries can cause excessive memory usage in MongoDB Query Planner resulting in an Out-Of-Memory Crash.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
不加限制或调节的资源分配
Source: NVD (National Vulnerability Database)
Vulnerability Title
MongoDB Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MongoDB Server是美国MongoDB公司的一套开源的NoSQL数据库。该数据库提供面向集合的存储、动态查询、数据复制及自动故障转移等功能。 MongoDB Server存在安全漏洞，该漏洞源于复杂查询可能导致内存使用过度，从而引发内存耗尽崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| MongoDB Inc | MongoDB Server | 8.0 ~ 8.0.18 | - |
II. Public POCs for CVE-2026-1850
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · MongoDB Inc · 2026-02-10 · 11 CVEs total
| CVE-2026-25611 | 7.5 HIGH | Pre-Authentication Memory Exhaustion Denial of Service in MongoDB Server |
| CVE-2026-1848 | 7.5 HIGH | Connections received from the proxy port may not count towards total accepted connections |
| CVE-2026-25612 | 6.5 MEDIUM | Internal ResourceId collision may affect unrelated collections |
| CVE-2026-25613 | 6.5 MEDIUM | An unsafe cast in the MongoDB query planner can result in a segmentation fault. |
| CVE-2026-25610 | 6.5 MEDIUM | Invalid $geoNear index hint may cause server crash |
| CVE-2026-1847 | 6.5 MEDIUM | MongoDB Server may crash when inserting large documents |
| CVE-2026-1849 | 6.5 MEDIUM | Mongod can run out of stack memory when expressions create deeply nested documents |
| CVE-2026-2302 | 6.5 MEDIUM | Unsafe Reflection in Mongoid::Criteria.from_hash |
| CVE-2026-2303 | 6.5 MEDIUM | Heap Out-of-Bounds Read in Go Driver GSSAPI C Wrappers enables application crash or inform |
| CVE-2026-25609 | 5.4 MEDIUM | profile command may permit unauthorized configuration |
IV. Related Vulnerabilities
Same product: MongoDB Server
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Post-auth null pointer dereference when aggregating against - CVE-2026-6915
Flaw in the updateUser Command May Allow Unauthorized Config - CVE-2026-6914
MD5 checksum creation may cause availability loss - CVE-2026-5170
Users could trigger a crash of mongod primaries during promo - CVE-2026-4358
Memory safety issues in slot-based execution hash table spil
Same vendor: MongoDB Inc
- CVE-2026-4359
Heap-buffer-over-read in _mongoc_http_send via strstr on non - CVE-2026-4358
Memory safety issues in slot-based execution hash table spil - CVE-2026-4148
ExpressionContext use-after-free in classic engine $lookup a - CVE-2026-4147
Stack memory disclosure in filemd5 command - CVE-2026-2303
Heap Out-of-Bounds Read in Go Driver GSSAPI C Wrappers enabl
Same weakness: CWE-770
- CVE-2026-42294
Argo Workflows: Unauthenticated Memory Exhaustion (DoS) in W - CVE-2026-42189
Russh: Pre-auth DoS via unbounded allocation in keyboard-int - CVE-2026-42793
Atom table exhaustion via attacker-controlled GraphQL SDL na - CVE-2026-44499
ZEBRA: Permanent Block Discovery Halt via Gossip Queue Satur - CVE-2026-44500
ZEBRA: Allocation Amplification in Inbound Network Deseriali
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