CVE-2026-114655: KMS request injection via unsanitized key vault and provider values in libmongocrypt
Description
libmongocrypt builds requests to external key management services (AWS, Azure and GCP) by inserting values from key vault documents, KMS provider configuration and KMS responses into request lines, headers and signed request bodies without validating or encoding them for each context. A user with write access to the key vault collection can alter the structure of these requests, including adding members to request bodies and token claims that the library then signs with the application's credentials. This may result in key management operations being performed with parameters the application did not intend.
Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N · CWE-74
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
MongoDB: libmongocrypt
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- github.com/mongodb/libmongocrypt/releases/tag/1.21.1 (opens in new tab)
- github.com/mongodb/libmongocrypt/security/advisories/GHSA-7mvq-mg47-m88j (opens in new tab)
- jira.mongodb.org/browse/MONGOCRYPT-963 (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)