CVE-2026-84962

libmongocrypt: An unauthorized user with key vault write access may cause an authorized client to issue arbitrary authenticated Goog...

CVE-2026-84962 is fixed in libmongocrypt on 1 platform by DEBIAN-CVE-2026-84962 (version 1.20.2-1), released September 5, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

n/a

No vendor severity

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0019

8th percentile

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.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
libmongocrypt · Debian 14	1.20.2-1	DEBIAN-CVE-2026-84962	Sep 5, 2026

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