5.4 CVE-2026-80195

Enriched by CISA
 

Kimai before 2.63.0 contains a business logic / improper authorization vulnerability in the team update API endpoint (PATCH /api/teams/{id}), which removes all existing team members before validating the submitted replacement member list. An authenticated teamlead (or other user) with permission to edit a team can submit a malformed members payload; although Kimai returns a validation error, the existing membership rows have already been deleted. This bypasses the dedicated member-removal endpoint's protection against removing teamleaders and can leave a team with no members or teamleaders, disrupting team-based access control.
https://nvd.nist.gov/vuln/detail/CVE-2026-80195

Categories

CWE-841 : Improper Enforcement of Behavioral Workflow
The product supports a session in which more than one behavior must be performed by an actor, but it does not properly ensure that the actor performs the behaviors in the required sequence. Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.) Bypass of access/billing restrictions by sending traffic to an unrestricted destination before sending to a restricted destination. Attacker can access portions of a restricted page by canceling out of a dialog. Ticket-tracking system does not enforce a permission setting. Shopping cart does not close a database connection when user restores a previous order, leading to connection exhaustion. Chain: product does not properly handle dropped connections, leading to missing NULL terminator (CWE-170) and segmentation fault. Chain: Authentication bypass by skipping the first startup step as required by the protocol. Chain: File server crashes when sent a "find next" request without an initial "find first." FTP server allows remote attackers to bypass authentication by sending (1) LIST, (2) RETR, (3) STOR, or other commands without performing the required login steps first. FTP server allows remote attackers to list arbitrary directories as root by running the LIST command before logging in.

References


 

AFFECTED (from MITRE)

Vendor Product Versions
kimai kimai
  • < 2.63.0 [affected]
  • 2.63.0 [unaffected]
© 2022 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation.

CPE

cpe start end
Configuration 1
cpe:2.3:a:kimai:kimai:*:*:*:*:*:*:*:* < 2.63.0

REMEDIATION


EXPLOITS

Exploit-db.com

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POC Github

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Other Nist (github, ...)

Url
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CAPEC

Common Attack Pattern Enumerations and Classifications

id description severity
No entry