CVE-2026-9748

published 2026-06-09

CVE-2026-9748: The $_internalConvertBucketIndexStats stage used PauseExecution as a way to signal "skip this document" when an index stats conversion failed. But…

Priority P4 34 medium 6.5 CVSS 3.1

AV N AC L PR L UI N S U C N I N A H

The $_internalConvertBucketIndexStats stage used PauseExecution as a way to signal "skip this document" when an index stats conversion failed. But PauseExecution is not a general purpose skip mechanism, but rather a TeeBuffer-internal signal used solely by $facet to coordinate its sub-pipelines. When this stage is placed before $facet in a pipeline, TeeBuffer receives the unexpected PauseExecution from upstream and hits a hard invariant assertion, crashing mongod.

Affected

8 ranges

Vendor	Product	Version range	Fixed in
mongodb	mongodb	>= 7.0.0 < 7.0.35	7.0.35
mongodb	mongodb	>= 8.0.0 < 8.0.10	8.0.10
mongodb	mongodb	>= 8.2.0 < 8.2.10	8.2.10
mongodb	mongodb	>= 8.3.0 < 8.3.3	8.3.3
mongodb	mongodb_server	>= 7.0.0 < 7.0.35	7.0.35
mongodb	mongodb_server	>= 8.0.0 < 8.0.10	8.0.10
mongodb	mongodb_server	>= 8.2.0 < 8.2.10	8.2.10
mongodb	mongodb_server	>= 8.3.0 < 8.3.3	8.3.3

CVSS provenance

nvd v3.1 6.5 MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd v4.0 7.1 HIGH CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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CWE-617