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No exploitation reportedFix available

CVE-2023-4853

Quarkus: http security policy bypass

No exploitation reported by the sources we read.

  • Published2023-09-20
  • Fixed in3.3.3 · 3.2.6 · 3.2.6.Final · 2.16.11 · 2.16.11.Final
  • WeaknessCWE-148 · CWE-863

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2023-09-2009:47CVE publishedCNA

Versions per branch

NVD · OSV
Quarkus
BranchAffectedFixed in
3.3≥ 3.3.0, < 3.3.33.3.3
3.2≥ 3.2.0, < 3.2.63.2.6
3.x≥ 3.0.0, < 3.2.6.Final3.2.6.Final
2.16< 2.16.112.16.11
2.16< 2.16.11.Final2.16.11.Final
Redhat openshift container platformversion to verify
BranchAffectedFixed in
4.10= 4.10no fix published
4.11= 4.11no fix published
4.12= 4.12no fix published
Redhat openshift serverless
BranchAffectedFixed in
—all versionsno fix published
1.0= 1.0no fix published

9 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA28 products

As redhat, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

22 more products in the CVE record.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-04

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • openshift-serverless-clientsRed Hat:serverless:1.0::el8all versions · fixed in 0:1.9.2-3.el8

Vendor advisories

  • CVE-2023-4853 Red Hat Product Security49 products fixed · 4 known affected

    quarkus: HTTP security policy bypass

    quarkus-keycloak-authorization as a component of Red Hat build of Quarkus · quarkus-undertow as a component of Red Hat build of Quarkus · quarkus-vertx-http as a component of Red Hat Integration Camel Quarkus 2 · +1 more

  • RHSA-2023:7653 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Service Registry (container images) release and security update [2.5.4 GA]

  • RHSA-2023:6112 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat Process Automation Manager 7.13.4 security one-off update

  • RHSA-2023:6107 Red Hat Product Security9 products fixed

    Red Hat Security Advisory: Updated Kogito for Red Hat Process Automation Manager 7.13.4 SP1 Images

  • RHSA-2023:5479 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: Release of OpenShift Serverless Client kn 1.30.1 security update

  • RHSA-2023:5480 Red Hat Product Security28 products fixed

    Red Hat Security Advisory: Release of OpenShift Serverless Logic 1.30.0 SP1 security update

4 more advisories

Full record on NVD

Fix

  1. Update Quarkus to 3.3.3 · 3.2.6 · 3.2.6.Final · 2.16.11 · 2.16.11.Final
  2. Vendor fix Red Hat Product Security RHSA-2023:7653 · 1 productBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
  3. Vendor fix Red Hat Product Security RHSA-2023:6107 · 9 productsUpdated Red Hat Process Automation Manager 7.13.4 SP1 OpenShift images can be found in the Red Hat Container Catalog.
  4. Vendor fix Red Hat Product Security RHSA-2023:5479 · 4 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
  5. Workaround from the vendor Red Hat Product Security RHSA-2023:7653 · 1 productUse a ‘deny’ wildcard for base paths, then authenticate specifics within that: Examples: ``` deny: /* authenticated: /services/* ``` or ``` deny: /services/* roles-allowed: /services/rbac/* ``` NOTE: Products are only vulnerable if they use (or allow use of) path-based HTTP policy configuration. …

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 3.18.12026-11-04
  • NVDCVSS 3.18.1read 2026-11-04
  • CNAweakness (CWE)CWE-1482026-11-04
  • NVDweakness (CWE)CWE-863read 2026-11-04
  • FIRST EPSSEPSS score2.3 %2026-11-08
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryHIGH2023-09-21

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2023-09-20
Last Modified
2026-11-04
NVD status
Modified
GitHub Advisory
GHSA-4f4r-wgv2-jjvg

Frequently asked questions

What is CVE-2023-4853?

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.

Is CVE-2023-4853 actively exploited?

Active exploitation of CVE-2023-4853 has not been confirmed. Its EPSS score was 2.3% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-4853?

CVE-2023-4853 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

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