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Out-of-Bounds Read/Write in MongoDB Timeseries Bucket Handling Leads to Denial of Service and Potential Memory Disclosure

🗓️ 11 Aug 2026 18:38:31Reported by MongoDBType 
mongodb
 mongodb
🔗 www.mongodb.com👁 20 Views

MongoDB Server timeseries bucket OOB read/write via authenticated user inserts causes DoS and memory disclosure.

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Detection
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-18693
11 Aug 202618:38
–attackerkb
circl
Circl
CVE-2026-18693
13 Aug 202604:45
–circl
cve
CVE
CVE-2026-18693
11 Aug 202618:38
–cve
cvelist
Cvelist
CVE-2026-18693 Out-of-Bounds Read/Write in MongoDB Timeseries Bucket Handling Leads to Denial of Service and Potential Memory Disclosure
11 Aug 202618:38
–cvelist
euvd
EUVD
EUVD-2026-56909
11 Aug 202618:38
–euvd
mend
Mend
CVE-2026-18693
11 Aug 202618:38
–mend
nvd
NVD
CVE-2026-18693
11 Aug 202619:17
–nvd
osv-bit
osv-bit
BIT-MONGODB-2026-18693 Out-of-Bounds Read/Write in MongoDB Timeseries Bucket Handling Leads to Denial of Service and Potential Memory Disclosure
17 Sep 202611:49
–osv-bit
osv-mini
osv-mini
MINI-8P7H-8XQX-Q492
17 Sep 202615:29
–osv-mini
osv-mini
osv-mini
MINI-WFCH-3CCP-4MH3
17 Sep 202615:29
–osv-mini
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Vulners
Node
OR
mongodbmongodbRange8.3.0–8.3.8
mongodbmongodbRange8.0–8.0.29
mongodbmongodbRange7.0–7.0.40

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11 Aug 2026 20:25Current
5.9Medium risk
Vulners AI Score5.9
CVSS 47.2
CVSS 3.17.6
EPSS0.0034
SSVC
20