CVE-2026-9743 Details
In MongoDB Server 8.0, an aggregation stage can leave its _subPipeline field null during processing of certain pipelines. If a getMore is subsequently issued on the same cursor, the server may dereference this null sub-pipeline when reattaching to the operation context, accessing an invalid address and crashing the process. This issue allows an authenticated user who can run aggregation pipelines to cause a denial of service by issuing a specially crafted aggregation followed by getMore on affected versions.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2026-9743
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.31 Probability of exploitation activity being observed over the next 30 days (22nd percentile)
CVSS score for CVE-2026-9743
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
6.5 Medium
Products affected by CVE-2026-9743
MongoDB 8.0.12
MongoDB 8.0.13
MongoDB 8.0.14
MongoDB 8.0.15
MongoDB 8.0.16
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
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CVE-2026-9743 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
ID 3,288 35.32%
US 1,071 11.50%
DE 699 7.51%
IN 591 6.35%
CN 480 5.16%
FR 475 5.10%
NL 324 3.48%
VN 263 2.83%
SG 219 2.35%
GB 209 2.25%

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CVE-2026-9743 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 3,471 93.08%
Telecommunications 220 5.90%
Education 11 0.29%
Retail 11 0.29%
Government/Politics 4 0.11%
Manufacturing 2 0.05%
Business Services 2 0.05%
Tourism/Hospitality 1 0.03%
Nonprofit/NGO 1 0.03%
Consumer Goods 1 0.03%

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