CVE-2021-3963

Name: CVE-2021-3963
Creator: NVD / NIST
Published: 2021-11-19T12:15:09.11+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.38%

Last modified Jun 17, 2026

CVE-2021-3963 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. kimai2 is vulnerable to Cross-Site Request Forgery (CSRF). EPSS estimates a 0.38% chance of exploitation in the next 30 days.

Description

kimai2 is vulnerable to Cross-Site Request Forgery (CSRF)

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.38%

30.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Kimai	Kimai 2	< 1.16.2

References

https://github.com/kevinpapst/kimai2/commit/95796ab2560ad93f44068a88f0fad758c2053514Patch, Third Party Advisory
https://huntr.dev/bounties/3abf308b-7dbd-4864-b1a9-5c45b876def8Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/kevinpapst/kimai2/commit/95796ab2560ad93f44068a88f0fad758c2053514Patch, Third Party Advisory
https://huntr.dev/bounties/3abf308b-7dbd-4864-b1a9-5c45b876def8Exploit, Issue Tracking, Patch, Third Party Advisory

Timeline

Published: Nov 19, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3963?

kimai2 is vulnerable to Cross-Site Request Forgery (CSRF)

How severe is CVE-2021-3963?

CVE-2021-3963 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3963?

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-2021-3963?

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

Scan your code now

Source: NVD / NIST