Is CVE-2023-39939 actively exploited?

No active exploitation of CVE-2023-39939 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-39939 be exploited remotely?

Yes. CVE-2023-39939 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-39939?

CVE-2023-39939 has a CVSS score of 9.1 (CRITICAL).

HOME VULNERABILITIESCVE-2023-39939

CRITICAL

CVE-2023-39939

CWE-89Published: August 21, 2023· Updated: Jun 17, 2026

9.1

CVSS v3.1

Official Description

SQL injection vulnerability in LuxCal Web Calendar prior to 5.2.3M (MySQL version) and LuxCal Web Calendar prior to 5.2.3L (SQLite version) allows a remote unauthenticated attacker to execute arbitrary queries against the database and obtain or alter the information in it.

NVD Source

Risk Analysis

LuxCal Web Calendar is vulnerable to SQL injection, allowing unauthenticated remote attackers to execute arbitrary database queries. This can lead to the unauthorized access or modification of sensitive information.

No public exploit is known, and it is not in the CISA KEV. The vulnerability is remotely exploitable with low complexity.

Recommended Action

Upgrade to LuxCal Web Calendar version 5.2.3M or 5.2.3L depending on the database type. Ensure the database user has the minimum required permissions.

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-2023-39939 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), with a CVSS base score of 9.1.

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