How severe is CVE-2026-23626?

CVE-2026-23626 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-23626 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-23626?

CVE-2026-23626 affects Kimai. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-23626?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-23626 have an EU (EUVD) identifier?

Yes. CVE-2026-23626 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3403.

When was CVE-2026-23626 published?

CVE-2026-23626 was published on 2026-01-18 and last updated on 2026-06-17.

CVE-2026-23626

CVE-2026-23626 is a medium-severity vulnerability in Kimai with a CVSS 3.x base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1336.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-3403
Weakness: CWE-1336
Affected product: Kimai
Published: 2026-01-18
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-23626?: 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.
How severe is CVE-2026-23626?: CVE-2026-23626 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-23626 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-23626?: CVE-2026-23626 affects Kimai. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-23626?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-23626 have an EU (EUVD) identifier?: Yes. CVE-2026-23626 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3403.
When was CVE-2026-23626 published?: CVE-2026-23626 was published on 2026-01-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:kimai:kimai:*:*:*:*:*:*:*:*

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