CVE-2023-6393: A flaw was found in the Quarkus Cache Runtime

Routine

MEDIUM 5.3WATCHLISTMITIGATE

CVE-2023-6393 is a medium-severity flaw (CVSS 5.3) affecting build of quarkus. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 a

Why this priority

On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-200
Published	2023-12-06
Last modified	2026-09-29

Publisher (CNA): Red Hat, Inc. · Vendor: redhat

Last updated 2026-09-29 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-12-06 17:15 UTCPublished CVE record published
2026-09-29 10:17 UTCUpdated Record last modified

redhat build of quarkus MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy build-of-quarkus || rpm -q build-of-quarkus || build-of-quarkus --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-6393?

build of quarkus: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-6393 being exploited?

CVE-2023-6393 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-6393 affect?

CVE-2023-6393 affects build of quarkus. Severity is medium (CVSS 5.3). 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 con

How urgent is CVE-2023-6393?

Priority 36/100. On your watchlist

Related CVEs

CVE-2023-6394 HIGH 7.4 UPGRADE MITIGATE A flaw was found in Quarkus
CVE-2022-1011 HIGH 7.8 UPGRADE MITIGATE A use-after-free flaw was found in the Linux kernel’s FUSE filesystem in the way a user triggers write()
CVE-2023-4853 HIGH 8.1 UPGRADE DOWNGRADE A flaw was found in Quarkus where HTTP security policies are not sanitizing certain character permutations cor
CVE-2023-2974 MEDIUM 6.5 UPGRADE A vulnerability was found in quarkus-core
CVE-2023-1664 MEDIUM 6.5 MITIGATE DOWNGRADE A flaw was found in Keycloak

References

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