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PatchSiren cyber security CVE debrief

CVE-2023-4231 Cevik Informatics CVE debrief

CVE-2023-4231 is a critical SQL injection vulnerability in Cevik Informatics Online Payment System affecting versions before 4.09. The published CVSS 3.1 vector indicates network exploitation without authentication or user interaction, with high impact to confidentiality, integrity, and availability. Defenders should treat this as an urgent patching and exposure-review item for any environment running the affected product line.

Vendor
Cevik Informatics
Product
Online Payment System
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2023-09-15
Original CVE updated
2026-05-21
Advisory published
2023-09-15
Advisory updated
2026-05-21

Who should care

Security teams, application owners, and administrators responsible for Cevik Informatics Online Payment System deployments, especially any internet-facing or business-critical payment workflows that may still run versions before 4.09.

Technical summary

The NVD record maps the issue to CWE-89 (SQL Injection) and lists the affected CPE as Cevik Informatics Online Payment System with versionEndExcluding 4.09. The CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating a remotely reachable flaw that does not require privileges or user interaction. The corpus does not include exploit details, and no KEV listing is indicated.

Defensive priority

Urgent. Remediate as soon as possible by upgrading away from affected versions and validating that no exposed instances remain on versions before 4.09.

Recommended defensive actions

  • Upgrade Cevik Informatics Online Payment System to version 4.09 or later.
  • Inventory all instances to confirm whether any deployment is running a version earlier than 4.09.
  • Prioritize externally reachable instances for immediate remediation and temporary access restriction if patching is delayed.
  • Review application and database logs for unusual query patterns or unexpected error behavior consistent with SQL injection attempts.
  • Validate that compensating controls such as least-privilege database access and input validation are in place, then retest after updating.

Evidence notes

The description and version boundary come from the official NVD record and CVE metadata, which state a SQL injection issue affecting Online Payment System before 4.09. The NVD data also includes CWE-89 and a CVSS 3.1 vector of AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. USOM references are included in the NVD record as third-party advisory links. No KEV entry is present in the supplied enrichment.

Sources and references

Verified primary and authoritative sources

  • CVE-2023-4231 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2023-4231

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2023-4231 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2023-4231

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.