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CVE-2021-4033

23
FAUCET Score

CVE-2021-4033 is a Cross-Site Request Forgery (CSRF) vulnerability affecting Kimai 2, an open-source time-tracking software. This vulnerability has a CVSS score of 6.5 (Medium), indicating that an attacker could exploit it with low complexity over a network, requiring user interaction, to achieve high integrity impact without affecting confidentiality or availability. There is currently no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit or Nuclei, or entries in ExploitDB. The vulnerability has received minimal community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.16.7CPE matchmatch criteria
cpe:2.3:a:kimai:kimai_2:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.51%
Probability of exploitation in next 30 days
EPSS Percentile
40.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0050 is in the 43rd percentile among its peer group of 26,219 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: kevinpapst/kimai2Fixed in: 1.16.7
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-4jwx-78vx-gm6gmedium

Cross-Site Request Forgery in kimai2

Dec 10, 2021

References

github.com / kevinpapst/kimai2/commit/1da26e041df62c10bd8075d78f2db7854d3eee07
PatchThird Party Advisory
huntr.dev / bounties/e05be1f7-d00c-4cfd-9390-ccd9d1c737b7
ExploitThird Party Advisory