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ExpressionContext use-after-free in classic engine $lookup and $graphLookup aggregation operators

🗓️ 17 Mar 2026 15:53:57Reported by MongoDBType 
mongodb
 mongodb
🔗 www.mongodb.com👁 27 Views

ExpressionContext use-after-free in classic engine via crafted lookups in sharded clusters by a reader.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-4148
17 Mar 202615:53
–attackerkb
circl
Circl
CVE-2026-4148
17 Mar 202615:16
–circl
cnnvd
CNNVD
MongoDB Server security vulnerabilities
17 Mar 202600:00
–cnnvd
cve
CVE
CVE-2026-4148
17 Mar 202615:53
–cve
cvelist
Cvelist
CVE-2026-4148 ExpressionContext use-after-free in classic engine $lookup and $graphLookup aggregation operators
17 Mar 202615:53
–cvelist
euvd
EUVD
EUVD-2026-12587
17 Mar 202618:30
–euvd
mend
Mend
CVE-2026-4148
17 Mar 202615:53
–mend
nvd
NVD
CVE-2026-4148
17 Mar 202616:16
–nvd
osv_bit
osv_bit
BIT-MONGODB-2026-4148 ExpressionContext use-after-free in classic engine $lookup and $graphLookup aggregation operators
13 May 202608:10
–osv_bit
osv_mini
osv_mini
MINI-3JRF-4C4G-6HM2
11 Apr 202615:17
–osv_mini
Rows per page
Vulners
Node
OR
mongodbmongodbRange8.2–8.2.6
mongodbmongodbRange8.0–8.0.20
mongodbmongodbRange7.0–7.0.31

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17 Mar 2026 16:10Current
6.2Medium risk
Vulners AI Score6.2
CVSS 48.7
CVSS 3.18.8
EPSS0.00336
SSVC
27