How severe is CVE-2023-4640?

CVE-2023-4640 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-4640 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4640?

CVE-2023-4640 affects Yugabyte Yugabytedb. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-4640?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-4640 published?

CVE-2023-4640 was published on 2023-08-30 and last updated on 2026-06-17.

CVE-2023-4640

CVE-2023-4640 is a medium-severity vulnerability in Yugabyte Yugabytedb with a CVSS 3.x base score of 6.5. 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-284.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Yugabyte Yugabytedb
Published: 2023-08-30
Last modified: 2026-06-17

Description

The controller responsible for setting the logging level does not include any authorization checks to ensure the user is authenticated. This can be seen by noting that it extends Controller rather than AuthenticatedController and includes no further checks. This issue affects YugabyteDB Anywhere: from 2.0.0 through 2.17.3

Frequently asked questions

What is CVE-2023-4640?: The controller responsible for setting the logging level does not include any authorization checks to ensure the user is authenticated. This can be seen by noting that it extends Controller rather than AuthenticatedController and includes no further checks. This issue affects YugabyteDB Anywhere: from 2.0.0 through 2.17.3
How severe is CVE-2023-4640?: CVE-2023-4640 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-4640 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4640?: CVE-2023-4640 affects Yugabyte Yugabytedb. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-4640?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-4640 published?: CVE-2023-4640 was published on 2023-08-30 and last updated on 2026-06-17.

References

https://www.yugabyte.com/

Affected products (1)

cpe:2.3:a:yugabyte:yugabytedb:*:*:*:*:*:*:*:*

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