XSS in Kimai
CVE-2026-40479
Kimai is an open-source time tracking application. In versions 1.16.3 through 2.52.0, the escapeForHtml() function in KimaiEscape.js does not escape double quote or single quote characters. When a user's profile alias is inserted into an H…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.002 (11.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Kimai — versions >= 1.16.3, < 2.53.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Product, x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-40479?
- CVE-2026-40479 is a medium-severity vulnerability in Kimai, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-04-17.
- How severe is CVE-2026-40479?
- Medium severity. CVSS v3 base score is 5.4 out of 10.