CVE-2026-106433 Affecting libmongocrypt package, versions <1.20.5-1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-LIBMONGOCRYPT-20698528
- published10 Oct 2026
- disclosed8 Oct 2026
Introduced: 8 Oct 2026
NewCVE-2026-106433 (opens in a new tab)How to fix?
Upgrade Debian:unstable libmongocrypt to version 1.20.5-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libmongocrypt package and not the libmongocrypt package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
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.