CVE-2026-106433: Heap corruption via duplicate masterKey fields in MongoDB libmongocrypt
MongoDB · libmongocrypt
Vendor fix available · Affected: MongoDB libmongocrypt · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 18% of scored CVEs
DescriptionCVE.org
Improper state management in MongoDB libmongocrypt can cause provider-specific data to be treated as an incompatible type when cleaning up a key document containing duplicate masterKey fields. An authenticated actor who can modify key vault documents, or a server that returns such a key document, can cause invalid memory access and invalid frees in the client process. This can terminate the application or corrupt process memory.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- MongoDB · libmongocryptfrom 1.1.0 before 1.20.5
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- MongoDB
- Published
- October 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-106433 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.