CVE-2021-45914

9.8 criticalEPSS 1.7%

Critical (9.8) in luxsoft luxcal. EPSS 1.7% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

9.8 critical

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

EPSS: 1.7% chance of exploitation in the next 30 days; higher than 76% of CVEs (scores of 2026-10-31)
Published: 2022-05-24
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

luxsoft:luxcal

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

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