What’s Vulnerable › Vulnerabilities

CVE-2023-46245: Kimai (Authenticated) SSTI to RCE by Uploading a Malicious Twig File

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-10-31 · updated 2026-06-17
• Weakness: CWE-1336

Description

Kimai is a web-based multi-user time-tracking application. Versions prior to 2.1.0 are vulnerable to a Server-Side Template Injection (SSTI) which can be escalated to Remote Code Execution (RCE). The vulnerability arises when a malicious user uploads a specially crafted Twig file, exploiting the software's PDF and HTML rendering functionalities. Version 2.1.0 enables security measures for custom Twig templates.

Affected products

• kimai: through 2.10

References

• https://github.com/kimai/kimai/commit/38e37f1c2e91e1acb221ec5c13f11b735bd50ae4
• https://github.com/kimai/kimai/security/advisories/GHSA-fjhg-96cp-6fcw
• https://github.com/kimai/kimai/commit/38e37f1c2e91e1acb221ec5c13f11b735bd50ae4
• https://github.com/kimai/kimai/security/advisories/GHSA-fjhg-96cp-6fcw

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