CVE Watch10 de nov. de 2026

CVE-2026-120809

A use-after-free read issue exists in MongoDB’s SBE (Slot-Based Execution) engine when processing aggregation pipelines with $unwind on time

CVSS

6.8

Média

EPSS

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KEV

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Exploit Today

0-100

Publicado: 10 de nov. de 2026 · Última mod.: 10 de nov. de 2026 · CWE-416

EPSS · 30d

Ainda não há histórico EPSS suficiente.

Descrição técnica

A use-after-free read issue exists in MongoDB’s SBE (Slot-Based Execution) engine when processing aggregation pipelines with $unwind on time-series collections. An internal error in state-preservation logic can cause a value still referenced by downstream stages to have its underlying memory freed prematurely. An authenticated user can craft an aggregation pipeline under specific conditions to trigger this condition, potentially reading recycled server heap memory in query results or crashing the server. This issue is only triggerable when a non-default server parameter related to the SBE engine is enabled.

Referências oficiais

jira.mongodb.orghttps://jira.mongodb.org/browse/SERVER-132279

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