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    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 HTML attribute context via the team member form prototype and rendered through innerHTML, this incomplete escaping allows HTML attribute injection. An authenticated user with ROLE_USER privileges can store a malicious alias that executes JavaScript in the browser of any administrator viewing the team form, resulting in stored XSS with privilege escalation. This issue has been fixed in version 2.53.0.

    Published:Apr 17, 2026
    Last Modified:Apr 27, 2026
    EPS:Apr 17, 2026
    EPSS Score:0.0001
    CVSS Score:5.4

    Affected Products

    Vendor
    Kimai
    Product
    Kimai

    Exploits

    https://github.com/kimai/kimai/security/advisories/GHSA-g82g-m9vx-vhjg

    Related CVEs

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High