BIT-mongodb-2026-11933

vendorUSosv

Post-authentication use-after-free in server-side JavaScript BSON-to-array conversion

view advisory published 2026-06-23Licence: per source

A use-after-free vulnerability exists in MongoDB Server's server-side JavaScript engine when converting BSON documents to JavaScript arrays. An authenticated user with read privileges who is able to run server-side JavaScript (for example, via $where or $function) can cause the server to access memory that has already been freed. This may result in disclosure of information from the mongod process memory or a denial of service through a server crash.

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describes (1)

Related CVEs.

IDseverity exploitable
CVE-2026-11933UShigh8.8—
A use-after-free vulnerability exists in MongoDB Server's server-side JavaScript engine when converting BSON documents to JavaScript arrays. An authenticated user with read privile…
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references

External citations — patches, advisories, analysis.

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