CVE-2026-1849 — Mongod can run out of stack memory when expressions create deeply nested documents

CVE-2026-1849

Mongod can run out of stack memory when expressions create deeply nested documents PUBLISHED

Description (CNA)

MongoDB Server may experience an out-of-memory failure while evaluating expressions that produce deeply nested documents. The issue arises in recursive functions because the server does not periodically check the depth of the expression.

Affected (CNA)

Vendor / product	Versions
MongoDB Inc / MongoDB Server	affected 8.0 before 8.0.18; affected 7.0 before 7.0.29; affected 8.2 before 8.2.2

CWE

CWE-674

References

https://jira.mongodb.org/browse/SERVER-102364

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.