Vulnerability-Lookup

CVE-2026-80197 (GCVE-0-2026-80197)

Vulnerability from cvelistv5 – Published: 2026-08-25 23:19 – Updated: 2026-08-26 13:46

Title

Kimai before 2.57.0 Improper Authorization via Favorite Endpoints

Summary

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.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-26 13:45 UTC

CWE

CWE-639 - Authorization Bypass Through User-Controlled Key

Assigner

VulnCheck mitre root

References

2 references

URL	Tags
https://github.com/kimai/kimai/security/advisorie…	vendor-advisory
https://www.vulncheck.com/advisories/kimai-before…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
kimai	kimai	Affected: 0 , < 2.57.0 (semver) Unaffected: 2.57.0 (semver) cpe:2.3:a:kimai:kimai::::::::

Date Public

2026-05-29 00:00

Credits

Mitchell45

Show details on NVD website

JSON

To clipboard

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}

FKIE_CVE-2026-80197

Vulnerability from fkie_nvd - Published: 2026-08-26 05:18 - Updated: 2026-08-26 14:17

Severity

4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Summary

References

	URL	Tags
	disclosure@vulncheck.com	https://github.com/kimai/kimai/security/advisories/GHSA-j5mc-p8qg-39j7
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/kimai-before-2.57.0-improper-authorization-via-favorite-endpoints

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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        {
          "defaultStatus": "unaffected",
          "product": "kimai",
          "vendor": "kimai",
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              "versionType": "semver"
            }
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      ],
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    }
  ],
  "id": "CVE-2026-80197",
  "lastModified": "2026-08-26T14:17:16.980",
  "metrics": {
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          "attackComplexity": "LOW",
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        "impactScore": 1.4,
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        "type": "Secondary"
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          "modifiedPrivilegesRequired": "NOT_DEFINED",
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    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/kimai/kimai/security/advisories/GHSA-j5mc-p8qg-39j7"
    },
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      "type": "Secondary"
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-80197 (GCVE-0-2026-80197)

FKIE_CVE-2026-80197

Tags

Sightings

Nomenclature