CVE-2026-84962

Publication date 4 September 2026

Last updated 4 September 2026

Ubuntu priority

Cvss 3 Severity Score

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libmongocrypt	26.04 LTS resolute	Needs evaluation
	24.04 LTS noble	Needs evaluation
	22.04 LTS jammy	Needs evaluation

Severity score breakdown

CVSS version:

Base score 5.7 · Medium

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	High
Attack requirements	Present
Privileges required	High
User interaction	Passive
Vulnerable system - Confidentiality impact	High
Vulnerable system - Integrity impact	None
Vulnerable system - Availability impact	None
Subsequent system - Confidentiality impact	None
Subsequent system - Integrity impact	None
Subsequent system - Availability impact	None

Scores

Parameter	Value
Base score	5.7 · Medium
Base + Threat score	-
Base + Environmental score	-
Base + Threat + Environmental score	-

Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Base score 4.2 · Medium

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	High
Privileges required	High
User interaction	Required
Scope	Unchanged
Confidentiality impact	High
Integrity impact	None
Availability impact	None

Scores

Parameter	Value
Base score	4.2 · Medium
Exploitability score	-
Impact score	-

Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N

CVE-2026-84962

Cvss 3 Severity Score

Description

Status

Severity score breakdown

References

Other references

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