CVE-2026-84805Network attack vectorHinoki check available

Authenticated work-contract modification via ungated API preferences

Published Sep 2, 2026 · Updated Sep 2, 2026

Missing authorization in Kimai 2.61.0 and later before 2.63.0 allows remote authenticated users to alter admin-only work-contract data. WorkContractPreferenceSubscriber registers the protected preferences as enabled without applying the contract_other_profile permission check enforced by the web interface. Any regular employee account can send PATCH /api/users/{id}/preferences to change its own employment-contract fields, but not another user's data.

CVSS severity5.3
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Missing authorization in Kimai 2.61.0 and later before 2.63.0 allows remote authenticated users to alter admin-only work-contract data. WorkContractPreferenceSubscriber registers the protected preferences as enabled without applying the contract_other_profile permission check enforced by the web interface. Any regular employee account can send PATCH /api/users/{id}/preferences to change its own employment-contract fields, but not another user's data.

The record

CVE
CVE-2026-84805
Published
Sep 2, 2026
Updated
Sep 2, 2026
Vendor
Kimai
Product
Kimai
Classifications
CWE-862, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 2, 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.

  1. Affected versionversion=2.61.0 <2.63.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Kimai · Kimaiversion=2.61.0 <2.63.0

Published CVSS scores

4.3VulnCheck CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
5.3VulnCheck CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1565.001Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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