CVE & CISA-KEV Catalog

CVE-2023-4853

HIGHEPSS 73th pctl
8.1
CVSS v3
NVD

Description

A flaw was found in Quarkus where HTTP security policies are not sanitizing certain character permutations correctly when accepting requests, resulting in incorrect evaluation of permissions. This issue could allow an attacker to bypass the security policy altogether, resulting in unauthorized endpoint access and possibly a denial of service.

CWE-148CWE-863Incorrect Authorization

How to fix

Remediation Available
openshift-serverless-clientsRocky
Fixed in:0:1.9.2-3.el8RHSA-2023:5479
Fixed in:0:1.9.2-3.el8RHSA-2023:5479
Fixed in:0:1.9.2-3.el8RHSA-2023:5479
Fixed in:0:1.9.2-3.el8RHSA-2023:5479
openshift-serverless-clientsRed Hat / RHEL
Fixed in:0:1.9.2-3.el8RHSA-2023:5479
Fixed in:0:1.9.2-3.el8RHSA-2023:5479
Fixed in:0:1.9.2-3.el8RHSA-2023:5479
Fixed in:0:1.9.2-3.el8RHSA-2023:5479

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

1.45%probability of exploitation in 30 days
73rdpercentile

Elevated risk: more likely to be exploited than 73% of all known CVEs.

References

Related Vulnerabilities

Other CWE-148 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2024-53856High7.50.5%-Fix
CVE-2026-12862Medium5.10.4%--

Common questions

How do I fix CVE-2023-4853?

Published advisories record a fix for 2 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2023-4853 being actively exploited?

Not that we know of. CVE-2023-4853 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.4% is the estimated probability that it will be exploited in the next 30 days. That is higher than 73% of all scored CVEs.

How severe is CVE-2023-4853?

CVE-2023-4853 has a CVSS v3 base score of 8.1, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2023-4853 affect?

Published advisories record a fix for openshift-serverless-clients (Rocky), openshift-serverless-clients (Red Hat / RHEL). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-08-04.