CVE-2021-4033

Cross-Site Request Forgery (CSRF) in kevinpapst/kimai2

6.5 MediumFix available

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

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: None
Integrity: High
Availability: None

Exploit likelihood

0.52%Down 0.1 points since Dec 10, 2021

What each source reports

CVE List Score used 6.5

Cross-Site Request Forgery (CSRF) in kevinpapst/kimai2

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

Record: CVE-2021-4033
CVSS 3.0: 6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Weakness: CWE-352
Updated: 2026-11-02

EUVDEUVD-2021-2440 6.5

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

Record: EUVD-2021-2440
CVSS 3.0: 6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Updated: 2026-11-03

GitHub AdvisoriesGHSA-4jwx-78vx-gm6g 6.5

Cross-Site Request Forgery in kimai2

CSRF in saving invoices / modifying status of invoices (pending and cancel only)

Record: GHSA-4jwx-78vx-gm6g
CVSS 3.0: 6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Weakness: CWE-352
Updated: 2026-11-02

NVD 6.5

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

Record: CVE-2021-4033
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CVSS 3.0: 6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness: CWE-352
Updated: 2026-11-02

OSV 6.5

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

Record: CVE-2021-4033
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Updated: 2026-11-02

OSVGHSA-4jwx-78vx-gm6g 6.5

Cross-Site Request Forgery in kimai2

CSRF in saving invoices / modifying status of invoices (pending and cancel only)

Record: GHSA-4jwx-78vx-gm6g
CVSS 3.0: 6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Weakness: CWE-352
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`kevinpapst/kimai2` Packagist	before 1.16.7	1.16.7
`kevinpapst/kimai2` Packagist	before 1.16.7, plus listed versions 0.10.20.30.40.5 Show 45 moreShow less 0.60.6.10.70.80.8.10.91.01.0.11.11.101.10.11.10.21.111.11.11.121.131.141.14.11.14.21.14.31.151.15.11.15.21.15.31.15.41.15.51.15.61.161.16.11.16.21.16.31.16.41.16.51.16.61.21.31.41.4.11.4.21.51.61.6.11.6.21.71.8	1.16.7

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-4033 is a medium vulnerability (CVSS 6.5) in Kevinpapst Kevinpapst/kimai2, published December 9, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.52%, the 44th percentile. Fixed in kevinpapst/kimai2 1.16.7.

References

This page doesn't list everything

Left out here: 1 version. The JSON record has them.