CVE-2026-80197

Kimai before 2.57.0 Improper Authorization via Favorite Endpoints

MEDIUM
4.3
CVSS Score
Published: August 25, 2026 at 11:19 PM UTC
Updated: October 8, 2026 at 04:17 PM UTC
1 product affected across 1 vendorKimai

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

Kimai before 2.57.0 contains an improper authorization vulnerability in the favorite timesheet add and remove endpoints that allows authenticated users to manipulate other users' bookmarks. Attackers can add or remove timesheet entries from another user's favorite list by referencing their timesheet identifier, enabling cross-user business-state tampering without administrative privileges.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0 ≤ v < 2.57.00
Vendor states this is fixed in 2.57.0 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-639

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