What’s Vulnerable › Vulnerabilities

CVE-2026-23626: Kimai Vulnerable to Authenticated Server-Side Template Injection (SSTI)

• Severity: medium (CVSS 6.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-01-18 · updated 2026-06-17
• Weakness: CWE-1336

Description

Kimai is a web-based multi-user time-tracking application. Prior to version 2.46.0, Kimai's export functionality uses a Twig sandbox with an overly permissive security policy (`DefaultPolicy`) that allows arbitrary method calls on objects available in the template context. An authenticated user with export permissions can deploy a malicious Twig template that extracts sensitive information including environment variables, all user password hashes, serialized session tokens, and CSRF tokens. Version 2.46.0 patches this issue.

Affected products

• kimai: before 2.46.0 — fixed in 2.46.0

How to fix

Upgrade to a fixed version: kimai 2.46.0. Check the vendor advisory for mitigations.

References

• https://github.com/kimai/kimai/commit/6a86afb5fd79f6c1825060b87c09bd1909c2e86f
• https://github.com/kimai/kimai/pull/5757
• https://github.com/kimai/kimai/releases/tag/2.46.0
• https://github.com/kimai/kimai/security/advisories/GHSA-jg2j-2w24-54cg

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