CVE catalog
CVE-2026-8201
A use-after-free vulnerability exists in MongoDB's Field-Level Encryption (FLE) query analysis component, affecting client-side uses of mongocryptd and crypt_shared. Triggering this vulnerability requ
- Severity
- Medium · CVSS 6.1
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:H/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.13% · Oct 25, 2026
A use-after-free vulnerability exists in MongoDB's Field-Level Encryption (FLE) query analysis component, affecting client-side uses of mongocryptd and crypt_shared. Triggering this vulnerability requires control over the structure of a client's FLE-related query. This issue impacts MongoDB Server’s mongocryptd component v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.
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 |
|---|---|---|---|---|
| Cpe | mongodb | Not reported | 7.0.34 | fixed |
| Cpe | mongodb | Not reported | 8.0.23 | fixed |
| Cpe | mongodb | Not reported | 8.2.9 | fixed |
| Cpe | mongodb | Not reported | 8.3.2 | fixed |
| Ubuntu | mongodb | pro | 1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu2 | vulnerable |
| Ubuntu | mongodb | pro | 1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5 | vulnerable |
| Ubuntu | mongodb | pro | 1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.2 | vulnerable |
| Ubuntu | mongodb | pro | 1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3 | vulnerable |
| Ubuntu | mongodb | pro | 1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1 | vulnerable |
| Cpe | mongodb | Not reported | 8.3.2 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | mongodb | cpe | Not reported | 7.0.34 | Not reported | Not reported | Not reported |
| Cpe | mongodb | cpe | Not reported | 8.0.23 | Not reported | Not reported | Not reported |
| Cpe | mongodb | cpe | Not reported | 8.2.9 | Not reported | Not reported | Not reported |
| Cpe | mongodb | cpe | Not reported | 8.3.2 | Not reported | Not reported | Not reported |
| Cpe | mongodb | cpe | Not reported | 8.3.2 | Not reported | NVD-CVE-2026-8201 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://jira.mongodb.org/browse/SERVER-122032]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-8201]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-8201]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1516.json]
[CERT-Bund public advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]