Security readout for executives and security teams
Plain-English summary
Quarkus may misread specially formed web requests when enforcing access rules. A remote, unauthenticated attacker could potentially reach protected endpoints, alter or expose data, or disrupt service. Exploitation requires a difficult request permutation, but successful bypass could have broad impact.
Executive priority
Treat as a high-priority remediation for internet-facing or sensitive Quarkus services because authorization failure could expose protected functions and data. Validate inventory immediately, then apply vendor-supported updates according to Red Hat advisories. Internal-only systems remain important but may be scheduled after externally reachable instances unless compensating controls are weak.
Technical view
CVE-2023-4853 is an HTTP security-policy bypass caused by inadequate sanitization of certain character permutations. Incorrect permission evaluation may grant unauthorized endpoint access and possibly cause denial of service. CVSS 3.1 is 8.1: network-accessible, unauthenticated, no user interaction, high complexity, with potentially high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely where listed affected Quarkus, OpenShift Serverless 1.30, or RHEL 8 middleware components enforce HTTP endpoint authorization. The bundle specifically identifies affected Quarkus 2.13.8.SP2 packages and several named Red Hat containers. OptaPlanner 8 and Camel Extensions for Quarkus 2.13.3-1 are marked unaffected.
Exploitation context
The bundle provides no evidence of active exploitation, and the CVE is not identified as CISA KEV. Attack complexity is rated high, but attacks could be remote and require neither authentication nor user interaction. The August 2026 record update should not, by itself, be treated as evidence of exploitation.
Researcher notes
The supplied evidence establishes improper request sanitization and permission evaluation but does not define the exact character permutations, vulnerable configuration prerequisites, corrected version boundaries, or public exploit availability. Avoid assuming every Quarkus deployment is exploitable. Confirm component versions, HTTP authorization use, request-routing layers, and vendor advisory applicability without testing destructively in production.
Mitigation direction
- Inventory the listed Quarkus, OpenShift Serverless, and RHEL middleware packages and versions.
- Review the applicable Red Hat security advisories for supported corrected packages or container images.
- Prioritize replacement or update of internet-facing components that enforce HTTP authorization policies.
- Restrict external access to protected endpoints until vendor remediation is verified.
- Monitor Red Hat guidance for any revised affected-version or mitigation information.
Validation and detection
- Compare deployed package and container versions with the bundle's affected entries and Red Hat advisories.
- Confirm applications actually use HTTP security policies to protect sensitive endpoints.
- After updating, verify protected endpoints consistently reject unauthenticated and unauthorized requests.
- Review access logs for unusual encoded requests or unexpected access to protected endpoints.
- Record unaffected findings separately for OptaPlanner 8 and Camel Extensions for Quarkus 2.13.3-1.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-148: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2023-4853 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H2.25.9redhatVulnerability scoring details
Base CVSS 3.1 score
8.1HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- Source timelineredhat
Reported to Red Hat.
- Source timelineredhat
Made public.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- RHSA-2023:5170CVE reference, redhat · vendor-advisory, x_refsource_REDHAT
- RHSA-2023:5310CVE reference, redhat · vendor-advisory, x_refsource_REDHAT
- RHSA-2023:5337CVE reference, redhat · vendor-advisory, x_refsource_REDHAT
- RHSA-2023:5446CVE reference, redhat · vendor-advisory, x_refsource_REDHAT
- RHSA-2023:5479CVE reference, redhat · vendor-advisory, x_refsource_REDHAT
- RHSA-2023:5480CVE reference, redhat · vendor-advisory, x_refsource_REDHAT
- RHSA-2023:6107CVE reference, redhat · vendor-advisory, x_refsource_REDHAT
- RHSA-2023:6112CVE reference, redhat · vendor-advisory, x_refsource_REDHAT
- RHSA-2023:7653CVE reference, redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2023-4853CVE reference, redhat · vdb-entry, x_refsource_REDHAT
- RHSB-2023-002CVE reference, redhat · technical-description, x_refsource_REDHAT
- RHBZ#2238034CVE reference, redhat · issue-tracking, x_refsource_REDHAT
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Input Leaders
Improper Neutralization of Input Leaders represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.