Sensitive data exposure via permissive export sandbox
Published Jan 18, 2026 · Updated Jan 18, 2026
Server-side template injection in Kimai before 2.46.0 allows remote authenticated users to read application secrets through export templates. ExportPolicy incorporates DefaultPolicy, whose empty security callbacks permit arbitrary property and method access on objects exposed to Twig templates. Exploitation requires export permission and filesystem access to place a malicious .pdf.twig file; disclosed impact is confined to sensitive data such as environment values, password hashes, session tokens, and CSRF tokens.
Summary
What happened
Server-side template injection in Kimai before 2.46.0 allows remote authenticated users to read application secrets through export templates. ExportPolicy incorporates DefaultPolicy, whose empty security callbacks permit arbitrary property and method access on objects exposed to Twig templates. Exploitation requires export permission and filesystem access to place a malicious .pdf.twig file; disclosed impact is confined to sensitive data such as environment values, password hashes, session tokens, and CSRF tokens.
The record
- CVE
- CVE-2026-23626
- Published
- Jan 18, 2026
- Updated
- Jan 18, 2026
- Vendor
- Kimai
- Product
- Kimai
- Classifications
- CWE-1336, T1539
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Jan 18, 2026CVE publishedPublication date reported by the CVE source.
- Jan 18, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 2.46.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- GHSA-jg2j-2w24-54cg exploit scriptfunctional · demonstrated
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Technologies
Your stack
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Your stack
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