CVE-2026-41498Public exploitNetwork attack vector

Cross-team modification via incorrect voter invocation

Published May 8, 2026 · Updated May 8, 2026

Missing authorization in Kimai before 2.54.0 allows remote authenticated users with edit_team permission to modify unauthorized teams. Eight association endpoints in TeamController pass edit_team as the voter attribute without the team object, so TeamVoter abstains and only the role-level permission is checked. The default configuration limits edit_team to administrators with global data access; exploitation requires assigning it to a lower-privilege role and permits changes to team membership and customer, project, or activity assignments.

CVSS severity3.3
Low
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Kimai before 2.54.0 allows remote authenticated users with edit_team permission to modify unauthorized teams. Eight association endpoints in TeamController pass edit_team as the voter attribute without the team object, so TeamVoter abstains and only the role-level permission is checked. The default configuration limits edit_team to administrators with global data access; exploitation requires assigning it to a lower-privilege role and permits changes to team membership and customer, project, or activity assignments.

The record

CVE
CVE-2026-41498
Published
May 8, 2026
Updated
May 8, 2026
Vendor
Kimai
Product
Kimai
Classifications
CWE-862, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 8, 2026CVE publishedPublication date reported by the CVE source.
  2. May 8, 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=< 2.54.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Kimai · Kimaiversion=< 2.54.0

Published CVSS scores

3.3GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
T1098Account Manipulation

Public exploit references

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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