CVE-2023-53957

Kimai vulnerability

9.8 CRITICALPublic exploitEPSS 0.59%

Published19 Dec 2025

Description

Kimai 1.30.10 contains a SameSite cookie vulnerability that allows attackers to steal user session cookies through malicious exploitation. Attackers can trick victims into executing a crafted PHP script that captures and writes session cookie information to a file, enabling potential session hijacking.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Kimai1.30.10

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

https://github.com/kimai/kimai/releases/tag/1.30.10ProductRelease Notes
https://www.exploit-db.com/exploits/51278ExploitThird Party AdvisoryVDB Entry
https://www.vulncheck.com/advisories/kimai-samesite-cookie-vulnerability-session-hijackingThird Party Advisory

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2023-53957 being actively exploited?

CVE-2023-53957 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.59%.

How severe is CVE-2023-53957?

CVE-2023-53957 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.59% probability of exploitation.

Which products are affected by CVE-2023-53957?

Affected products include Kimai.

How do I fix CVE-2023-53957?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-53957 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.