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Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-9749

This issue can occur when running an aggregation pipeline that uses the internal $exchange stage configured with key-range partitioning and order-preserving delivery. If a single key range produces enough documents to fill its exchange buffer (that is, many results are routed to the same consumer), the server reaches the code path where a full per-consumer buffer is detected but the internal "high watermark" for that key range is not updated as intended.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 14.1%
CVSS Severity
CVSS v3 Score 6.5
Products affected by CVE-2026-9749
  • Mongodb » Mongodb » Version: 7.0.0
    cpe:2.3:a:mongodb:mongodb:7.0.0
  • Mongodb » Mongodb » Version: 7.0.1
    cpe:2.3:a:mongodb:mongodb:7.0.1
  • Mongodb » Mongodb » Version: 7.0.10
    cpe:2.3:a:mongodb:mongodb:7.0.10
  • Mongodb » Mongodb » Version: 7.0.11
    cpe:2.3:a:mongodb:mongodb:7.0.11
  • Mongodb » Mongodb » Version: 7.0.12
    cpe:2.3:a:mongodb:mongodb:7.0.12
  • Mongodb » Mongodb » Version: 7.0.13
    cpe:2.3:a:mongodb:mongodb:7.0.13
  • Mongodb » Mongodb » Version: 7.0.14
    cpe:2.3:a:mongodb:mongodb:7.0.14
  • Mongodb » Mongodb » Version: 7.0.15
    cpe:2.3:a:mongodb:mongodb:7.0.15
  • Mongodb » Mongodb » Version: 7.0.16
    cpe:2.3:a:mongodb:mongodb:7.0.16
  • Mongodb » Mongodb » Version: 7.0.17
    cpe:2.3:a:mongodb:mongodb:7.0.17
  • Mongodb » Mongodb » Version: 7.0.18
    cpe:2.3:a:mongodb:mongodb:7.0.18
  • Mongodb » Mongodb » Version: 7.0.19
    cpe:2.3:a:mongodb:mongodb:7.0.19
  • Mongodb » Mongodb » Version: 7.0.2
    cpe:2.3:a:mongodb:mongodb:7.0.2
  • Mongodb » Mongodb » Version: 7.0.20
    cpe:2.3:a:mongodb:mongodb:7.0.20
  • Mongodb » Mongodb » Version: 7.0.21
    cpe:2.3:a:mongodb:mongodb:7.0.21
  • Mongodb » Mongodb » Version: 7.0.22
    cpe:2.3:a:mongodb:mongodb:7.0.22
  • Mongodb » Mongodb » Version: 7.0.23
    cpe:2.3:a:mongodb:mongodb:7.0.23
  • Mongodb » Mongodb » Version: 7.0.24
    cpe:2.3:a:mongodb:mongodb:7.0.24
  • Mongodb » Mongodb » Version: 7.0.25
    cpe:2.3:a:mongodb:mongodb:7.0.25
  • Mongodb » Mongodb » Version: 7.0.26
    cpe:2.3:a:mongodb:mongodb:7.0.26
  • Mongodb » Mongodb » Version: 7.0.27
    cpe:2.3:a:mongodb:mongodb:7.0.27
  • Mongodb » Mongodb » Version: 7.0.28
    cpe:2.3:a:mongodb:mongodb:7.0.28
  • Mongodb » Mongodb » Version: 7.0.29
    cpe:2.3:a:mongodb:mongodb:7.0.29
  • Mongodb » Mongodb » Version: 7.0.3
    cpe:2.3:a:mongodb:mongodb:7.0.3
  • Mongodb » Mongodb » Version: 7.0.30
    cpe:2.3:a:mongodb:mongodb:7.0.30
  • Mongodb » Mongodb » Version: 7.0.31
    cpe:2.3:a:mongodb:mongodb:7.0.31
  • Mongodb » Mongodb » Version: 7.0.32
    cpe:2.3:a:mongodb:mongodb:7.0.32
  • Mongodb » Mongodb » Version: 7.0.4
    cpe:2.3:a:mongodb:mongodb:7.0.4
  • Mongodb » Mongodb » Version: 7.0.5
    cpe:2.3:a:mongodb:mongodb:7.0.5
  • Mongodb » Mongodb » Version: 7.0.6
    cpe:2.3:a:mongodb:mongodb:7.0.6
  • Mongodb » Mongodb » Version: 7.0.7
    cpe:2.3:a:mongodb:mongodb:7.0.7
  • Mongodb » Mongodb » Version: 7.0.8
    cpe:2.3:a:mongodb:mongodb:7.0.8
  • Mongodb » Mongodb » Version: 7.0.9
    cpe:2.3:a:mongodb:mongodb:7.0.9
  • Mongodb » Mongodb » Version: 8.0.0
    cpe:2.3:a:mongodb:mongodb:8.0.0
  • Mongodb » Mongodb » Version: 8.0.1
    cpe:2.3:a:mongodb:mongodb:8.0.1
  • Mongodb » Mongodb » Version: 8.0.10
    cpe:2.3:a:mongodb:mongodb:8.0.10
  • Mongodb » Mongodb » Version: 8.0.11
    cpe:2.3:a:mongodb:mongodb:8.0.11
  • Mongodb » Mongodb » Version: 8.0.12
    cpe:2.3:a:mongodb:mongodb:8.0.12
  • Mongodb » Mongodb » Version: 8.0.13
    cpe:2.3:a:mongodb:mongodb:8.0.13
  • Mongodb » Mongodb » Version: 8.0.14
    cpe:2.3:a:mongodb:mongodb:8.0.14
  • Mongodb » Mongodb » Version: 8.0.15
    cpe:2.3:a:mongodb:mongodb:8.0.15
  • Mongodb » Mongodb » Version: 8.0.16
    cpe:2.3:a:mongodb:mongodb:8.0.16
  • Mongodb » Mongodb » Version: 8.0.17
    cpe:2.3:a:mongodb:mongodb:8.0.17
  • Mongodb » Mongodb » Version: 8.0.18
    cpe:2.3:a:mongodb:mongodb:8.0.18
  • Mongodb » Mongodb » Version: 8.0.19
    cpe:2.3:a:mongodb:mongodb:8.0.19
  • Mongodb » Mongodb » Version: 8.0.2
    cpe:2.3:a:mongodb:mongodb:8.0.2
  • Mongodb » Mongodb » Version: 8.0.20
    cpe:2.3:a:mongodb:mongodb:8.0.20
  • Mongodb » Mongodb » Version: 8.0.21
    cpe:2.3:a:mongodb:mongodb:8.0.21
  • Mongodb » Mongodb » Version: 8.0.3
    cpe:2.3:a:mongodb:mongodb:8.0.3
  • Mongodb » Mongodb » Version: 8.0.4
    cpe:2.3:a:mongodb:mongodb:8.0.4
  • Mongodb » Mongodb » Version: 8.0.5
    cpe:2.3:a:mongodb:mongodb:8.0.5
  • Mongodb » Mongodb » Version: 8.0.6
    cpe:2.3:a:mongodb:mongodb:8.0.6
  • Mongodb » Mongodb » Version: 8.0.7
    cpe:2.3:a:mongodb:mongodb:8.0.7
  • Mongodb » Mongodb » Version: 8.0.8
    cpe:2.3:a:mongodb:mongodb:8.0.8
  • Mongodb » Mongodb » Version: 8.0.9
    cpe:2.3:a:mongodb:mongodb:8.0.9
  • Mongodb » Mongodb » Version: 8.2.0
    cpe:2.3:a:mongodb:mongodb:8.2.0
  • Mongodb » Mongodb » Version: 8.2.1
    cpe:2.3:a:mongodb:mongodb:8.2.1
  • Mongodb » Mongodb » Version: 8.2.2
    cpe:2.3:a:mongodb:mongodb:8.2.2
  • Mongodb » Mongodb » Version: 8.2.3
    cpe:2.3:a:mongodb:mongodb:8.2.3
  • Mongodb » Mongodb » Version: 8.2.4
    cpe:2.3:a:mongodb:mongodb:8.2.4
  • Mongodb » Mongodb » Version: 8.2.5
    cpe:2.3:a:mongodb:mongodb:8.2.5
  • Mongodb » Mongodb » Version: 8.2.6
    cpe:2.3:a:mongodb:mongodb:8.2.6
  • Mongodb » Mongodb » Version: 8.2.7
    cpe:2.3:a:mongodb:mongodb:8.2.7
  • Mongodb » Mongodb » Version: 8.3.0
    cpe:2.3:a:mongodb:mongodb:8.3.0


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