Is CVE-2023-43739 actively exploited?

No active exploitation of CVE-2023-43739 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-43739 be exploited remotely?

Yes. CVE-2023-43739 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-43739?

CVE-2023-43739 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2023-43739

CRITICAL

CVE-2023-43739

CWE-89Published: September 28, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

The 'bookisbn' parameter of the cart.php resource

does not validate the characters received and they

are sent unfiltered to the database.

NVD Source

Risk Analysis

The Online Book Store Project is affected by a critical SQL injection vulnerability in the bookisbn parameter of cart.php. This flaw allows remote, unauthenticated attackers to execute arbitrary database commands, warranting a high urgency rating. No exploitation in the wild has been reported.

No public exploit is currently known for this issue, but it is remotely exploitable with low attack complexity.

Recommended Action

Upgrade to the latest version of the Online Book Store Project if available. Ensure all user-supplied input is properly sanitized and validated before being used in database queries.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-43739 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-89): SQL injection vulnerabilities allow attackers to manipulate database queries, potentially exposing or modifying sensitive data.