CVE-2026-4148— ExpressionContext use-after-free in classic engine $lookup and $graphLookup aggregation operators
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-4148
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
ExpressionContext use-after-free in classic engine $lookup and $graphLookup aggregation operators
Source: NVD (National Vulnerability Database)
Vulnerability Description
A use-after-free vulnerability can be triggered in sharded clusters by an authenticated user with the read role who issues a specially crafted $lookup or $graphLookup aggregation pipeline.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
释放后使用
Source: NVD (National Vulnerability Database)
Vulnerability Title
MongoDB Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MongoDB Server是美国MongoDB公司的一套开源的NoSQL数据库。该数据库提供面向集合的存储、动态查询、数据复制及自动故障转移等功能。 MongoDB Server存在安全漏洞，该漏洞源于经过身份验证的用户在分片集群中发出特制的$lookup或$graphLookup聚合管道时可能触发释放后重用漏洞。
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 | 8.2 ~ 8.2.6 | - |
II. Public POCs for CVE-2026-4148
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-4148
请登录查看更多情报信息。
Same Patch Batch · MongoDB Inc · 2026-03-17 · 4 CVEs total
| CVE-2026-4147 | 6.5 MEDIUM | Stack memory disclosure in filemd5 command |
| CVE-2026-4358 | 6.4 MEDIUM | Memory safety issues in slot-based execution hash table spill |
| CVE-2026-4359 | 2.0 LOW | Heap-buffer-over-read in _mongoc_http_send via strstr on non-null-terminated buffer |
IV. Related Vulnerabilities
Same product: MongoDB Server
- CVE-2026-8063
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-2026-4147
Stack memory disclosure in filemd5 command - CVE-2026-2303
Heap Out-of-Bounds Read in Go Driver GSSAPI C Wrappers enabl - CVE-2026-2302
Unsafe Reflection in Mongoid::Criteria.from_hash
V. Comments for CVE-2026-4148
No comments yet