CVE-2026-84962
CVE-2026-84962 is a medium-severity vulnerability in Mongodb Libmongocrypt with a CVSS 3.x base score of 4.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-93.
Key facts
- Severity: Medium (CVSS 3.x base score 4.2)
- CVSS v4: 5.7
- EPSS exploit prediction: 0% (7th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-93
- Affected product: Mongodb Libmongocrypt
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2026-84962?
- 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.
- How severe is CVE-2026-84962?
- CVE-2026-84962 has a CVSS 3.x base score of 4.2, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2026-84962 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-84962?
- CVE-2026-84962 affects Mongodb Libmongocrypt. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-84962?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2026-84962 published?
- CVE-2026-84962 was published on 2026-09-03 and last updated on 2026-09-17.
References
Affected products (1)
- cpe:2.3:a:mongodb:libmongocrypt:*:*:*:*:*:*:*:*
More vulnerabilities in Mongodb Libmongocrypt
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- CVE-2026-81523 — Medium (CVSS 4.4): A missing input-validation issue in MongoDB libmongocrypt's automatic-encryption context setup allows a caller-supplied…
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