CVE-2026-9748 | BDVDB-2026-338767 Detail

Description#

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.

Impact#

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Exploit#

History#

1. Version 12026-06-09Record published in the CVE List.
2. Version 22026-06-10Most recent update recorded in the CVE List.