CVE catalog
CVE-2026-106433
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 auth
- Severity
- High · CVSS 8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.27% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libmongocrypt | sid | 1.21.1-1 | fixed |
| Debian | libmongocrypt | forky | 1.21.0-1 | fixed |
| Debian | libmongocrypt | trixie | 1.13.2-1+deb13u1 | vulnerable |
| Debian | libmongocrypt | bookworm | 1.7.2-1 | vulnerable |
| Cpe | libmongocrypt | Not reported | 1.20.5 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libmongocrypt | source | sid | 1.20.5-1 | not yet assigned | Not reported | Not reported |
| Debian | libmongocrypt | source | forky | 1.20.5-1 | not yet assigned | Not reported | Not reported |
| Debian | libmongocrypt | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | libmongocrypt | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
| Cpe | libmongocrypt | cpe | Not reported | 1.20.5 | Not reported | NVD-CVE-2026-106433 | Not reported |
Notes
[trixie] libmongocrypt: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libmongocrypt0]Affected
Source package: [libmongocrypt]
Details (2)
1.7.2-1· amd64 · bookwormAffected
nvd · libmongocrypt · debian · bookworm
1.7.2-1· arm64 · bookwormAffected
nvd · libmongocrypt · debian · bookworm
- [libmongocrypt-dev]Affected
Source package: [libmongocrypt]
Details (2)
1.7.2-1· amd64 · bookwormAffected
nvd · libmongocrypt · debian · bookworm
1.7.2-1· arm64 · bookwormAffected
nvd · libmongocrypt · debian · bookworm
Observed:
References
- [https://jira.mongodb.org/browse/MONGOCRYPT-964]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-106433]
- [https://security-tracker.debian.org/tracker/CVE-2026-106433]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-106433.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3830.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX]