What’s Vulnerable › Vulnerabilities

CVE-2021-45914

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-05-24 · updated 2026-06-17

Description

In LuxSoft LuxCal Web Calendar before 5.2.0, an unauthenticated attacker can manipulate a POST request. This allows the attacker's session to be authenticated as any registered LuxCal user, including the site administrator.

Affected products

• LuxSoft Luxcal: before 5.2.0 — fixed in 5.2.0

How to fix

Upgrade to a fixed version: LuxSoft Luxcal 5.2.0. Check the vendor advisory for mitigations.

References

• https://github.com/h1pmnh
• https://h1pmnh.github.io/post/cve-luxcal-2021/
• https://twitter.com/h1pmnh
• https://www.luxsoft.eu/index.php?pge=dload
• https://github.com/h1pmnh
• https://h1pmnh.github.io/post/cve-luxcal-2021/
• https://twitter.com/h1pmnh
• https://www.luxsoft.eu/index.php?pge=dload

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