How severe is CVE-2023-6393?

CVE-2023-6393 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-6393 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-6393?

CVE-2023-6393 affects Redhat Build Of Quarkus. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-6393?

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

When was CVE-2023-6393 published?

CVE-2023-6393 was published on 2023-12-06 and last updated on 2026-06-17.

CVE-2023-6393

CVE-2023-6393 is a medium-severity vulnerability in Redhat Build Of Quarkus with a CVSS 3.x base score of 5.3. 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-200.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Redhat Build Of Quarkus
Published: 2023-12-06
Last modified: 2026-06-17

Description

A flaw was found in the Quarkus Cache Runtime. When request processing utilizes a Uni cached using @CacheResult and the cached Uni reuses the initial "completion" context, the processing switches to the cached Uni instead of the request context. This is a problem if the cached Uni context contains sensitive information, and could allow a malicious user to benefit from a POST request returning the response that is meant for another user, gaining access to sensitive data.

Frequently asked questions

What is CVE-2023-6393?: A flaw was found in the Quarkus Cache Runtime. When request processing utilizes a Uni cached using @CacheResult and the cached Uni reuses the initial "completion" context, the processing switches to the cached Uni instead of the request context. This is a problem if the cached Uni context contains sensitive information, and could allow a malicious user to benefit from a POST request returning the response that is meant for another user, gaining access to sensitive data.
How severe is CVE-2023-6393?: CVE-2023-6393 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-6393 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-6393?: CVE-2023-6393 affects Redhat Build Of Quarkus. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-6393?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-6393 published?: CVE-2023-6393 was published on 2023-12-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:redhat:build_of_quarkus:-:*:*:*:*:*:*:*

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