Medium severity · published Sep 3, 2026
CVE-2026-84962
Authenticated KMS request forgery via CRLF injection in GCP key identifier strings
4.2
CVSS
0.2%
EPSS
No
On KEV
Description
An unauthorized user with key vault write access may cause an authorized client to issue arbitrary authenticated Google Cloud KMS API calls under the authorized user's identity, escalating database-level access into cloud key control and defeating client-side encryption.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
High
User interaction
Required
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MO
MongoDB · MongoDB
before 1.20.2 · source: vendor
LI
Libmongocrypt · Mongodb
before 1.20.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-84962
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-84962
Vendor Advisory
https://jira.mongodb.org/browse/MONGOCRYPT-960
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