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CVE-2021-3983

22
FAUCET Score

CVE-2021-3983 describes a Cross-site Scripting (XSS) vulnerability in the kimai2_project kimai2 application, stemming from improper neutralization of input during web page generation. This medium-severity vulnerability (CVSS 6.1) can be exploited remotely with low attack complexity, requiring user interaction, and could lead to limited confidentiality and integrity impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.16.3CPE matchmatch criteria
cpe:2.3:a:kimai2_project:kimai2:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
3.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.76%
Probability of exploitation in next 30 days
EPSS Percentile
51.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0076 is in the 59th percentile among its peer group of 26,221 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: 1.16.3
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-67c7-5v9j-227rmedium

Cross-site Scripting in kimai2

Dec 3, 2021

References

github.com / kevinpapst/kimai2/commit/89bfa82c61da0d3639e4038e689e25467baac8a0
PatchThird Party Advisory
huntr.dev / bounties/c96f3480-dccf-4cc2-99a4-d2b3a7462413
ExploitPatchThird Party Advisory