What’s Vulnerable › Vulnerabilities

CVE-2023-39543

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-08-21 · updated 2026-06-17
• Weakness: CWE-79

Description

Cross-site scripting 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 an arbitrary script on the web browser of the user who is using the product.

Affected products

• LuxSoft LuxCal Web Calendar: before 5.2.3m; before 5.2.3l — fixed in 5.2.3l, 5.2.3m

How to fix

Upgrade to a fixed version: LuxSoft LuxCal Web Calendar 5.2.3l, 5.2.3m. Check the vendor advisory for mitigations.

References

• https://jvn.jp/en/jp/JVN04876736/
• https://www.luxsoft.eu/
• https://www.luxsoft.eu/?download
• https://jvn.jp/en/jp/JVN04876736/
• https://www.luxsoft.eu/
• https://www.luxsoft.eu/?download

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