CVE-2023-6393
Quarkus: potential invalid reuse of context when @cacheresult on a uni is used
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Quarkus: potential invalid reuse of context when @cacheresult on a uni is used
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.
- Record
CVE-2023-6393- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
EUVDEUVD-2023-3324
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.
- Record
EUVD-2023-3324- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-xfv5-jqgp-vqhj
Quarkus Cache Runtime exposes sensitive information to an unauthorized actor
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.
- Record
GHSA-xfv5-jqgp-vqhj- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2023-6393- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
OSVGHSA-xfv5-jqgp-vqhj
Quarkus Cache Runtime exposes sensitive information to an unauthorized actor
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.
- Record
GHSA-xfv5-jqgp-vqhj- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
io.quarkus:quarkus-cacheMaven |
3.3.0.CR1 up to 3.5.2 | 3.5.2 |
io.quarkus:quarkus-cacheMaven |
3.2.0.CR1 up to 3.2.9.Final | 3.2.9.Final |
io.quarkus:quarkus-cacheMaven |
3.3.0.CR1 up to 3.5.2, plus listed versions 3.3.03.3.13.3.23.3.33.4.0 Show 7 moreShow less3.4.0.CR13.4.13.4.23.4.33.5.03.5.0.CR13.5.1 |
3.5.2 |
io.quarkus:quarkus-cacheMaven |
3.2.0.CR1 up to 3.2.9.Final, plus listed versions 3.2.0.Final3.2.1.Final3.2.2.Final3.2.3.Final3.2.4.Final Show 4 moreShow less3.2.5.Final3.2.6.Final3.2.7.Final3.2.8.Final |
3.2.9.Final |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-6393 is a medium vulnerability (CVSS 5.3) in Red Hat Build Of Quarkus, published December 6, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.64%, the 50th percentile. Fixed in io.quarkus:quarkus-cache 3.5.2.
References
access.redhat.com/errata/RHSA-2023:7700
bugzilla.redhat.com/show_bug.cgi?id=2253113
nvd.nist.gov/vuln/detail/CVE-2023-6393
github.com/quarkusio/quarkus/issues/37078