CVE-2023-39939

Name: CVE-2023-39939
Creator: NVD / NIST
Published: 2023-08-21T09:15:10.28+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 0.70%

Last modified Jun 17, 2026

CVE-2023-39939 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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.. EPSS estimates a 0.70% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS Probability

0.70%

48.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-89

Affected Software

Vendor	Product	Versions
Luxsoft	Luxcal Web Calendar	< 5.2.3m
Luxsoft	Luxcal Web Calendar	< 5.2.3l

References

https://jvn.jp/en/jp/JVN04876736/Third Party Advisory
https://www.luxsoft.eu/Product
https://www.luxsoft.eu/?downloadProduct
https://jvn.jp/en/jp/JVN04876736/Third Party Advisory
https://www.luxsoft.eu/Product
https://www.luxsoft.eu/?downloadProduct

Timeline

Published: Aug 21, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-39939?

How severe is CVE-2023-39939?

CVE-2023-39939 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.70% probability of exploitation in the next 30 days.

How do I fix CVE-2023-39939?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-39939?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST