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Not in CISA KEV
LOW severity

CVE-2024-4596 — kimai

LOW

CVE-2024-4596 is a low-severity (CVSS 3.7) Information Exposure vulnerability in kimai/kimai. A fix is available for kimai/kimai — see the affected versions and patch details below.

Kimai Session information disclosure

Also known asGHSA-6f3v-2r2j-2rpr
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 3, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2024-4596.

EPSS Exploitation Probability

via FIRST.org ↗
0.8%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs56th percentile — riskier than 56% of all scored CVEsHighest risk
0.00%0.43%0.86%1.29%0.3%0.8%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐘kimai/kimai

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

A vulnerability was found in Kimai up to 2.15.0 and classified as problematic. Affected by this issue is some unknown functionality of the component Session Handler. The manipulation of the argument PHPSESSIONID leads to information disclosure. The attack may be launched remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. Upgrading to version 2.16.0 is able to address this issue. It is recommended to upgrade the affected component. VDB-263318 is the identifier assigned to this vulnerability.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistkimai/kimaiall versions2.16.0composer require kimai/kimai:^2.16.0

Affected Products

1 product · 1 configurations
Application
kimaikimai
< 2.16.0
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for kimai/kimai, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update kimai/kimai to 2.16.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-4596 is resolved across your whole dependency graph.

  3. Workarounds

    Assume what was exposed is already known: rotate any credential, token or key that the affected component could return, restrict the endpoint to callers that genuinely need it, and strip sensitive fields from responses and error output at the boundary rather than relying on the client not to read them.

Frequently Asked Questions

A vulnerability was found in Kimai up to 2.15.0 and classified as problematic. Affected by this issue is some unknown functionality of the component Session Handler. The manipulation of the argument PHPSESSIONID leads to information disclosure. The attack may be launched remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. Upgrading to version 2.16.0 is able to address this issue. It is recommended to upgrade the affected component. VDB-263318 is the identifier assigned to this vulnerability.
O3 Security · Impact-Aware SCA

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CVE-2024-4596: kimai Info Disclosure — Fixed in 2.16.0