CVE-2026-52825Network attack vectorHinoki check available

Team scope expansion via unchecked object assignment

Published Sep 15, 2026 · Updated Sep 15, 2026

Improper authorization in Kimai before 2.58.0 allows remote authenticated users with Teamlead access to expand team scope via API calls. The team member and activity POST handlers check only whether the caller may edit the team, then save referenced objects without access_user or view authorization. Exploitation requires an authenticated Teamlead who can edit at least one team, and the saved relations can widen visibility and affect reporting and workflow authorization.

CVSS severity5.3
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper authorization in Kimai before 2.58.0 allows remote authenticated users with Teamlead access to expand team scope via API calls. The team member and activity POST handlers check only whether the caller may edit the team, then save referenced objects without access_user or view authorization. Exploitation requires an authenticated Teamlead who can edit at least one team, and the saved relations can widen visibility and affect reporting and workflow authorization.

The record

CVE
CVE-2026-52825
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
Kimai
Product
Kimai
Classifications
CWE-285, CWE-862
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 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=< 2.58.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Kimai · Kimaiversion=< 2.58.0

Published CVSS scores

5.3OSVCVSS: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.

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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-285Improper Authorization
CWE-862Missing Authorization

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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