CVE-2026-49274: CWE-862: Missing Authorization in getkirby kirby
Kirby is an open-source content management system. Prior to 4.9.4 and 5.4.4, Kirby sites using the pages field with roles that have the pages.access permission disabled allowed authenticated users to provide an inaccessible parent page or site to the page picker backend and confirm arbitrary page existence and retrieve title field values. This issue is fixed in versions 4.9.4 and 5.4.4.
AI Analysis
Technical Summary
CVE-2026-49274 is a missing authorization vulnerability (CWE-862) in the Kirby content management system affecting versions before 4.9.4 and 5.4.4. When the pages field is used with roles that have the pages.access permission disabled, authenticated users can bypass intended access restrictions by providing an inaccessible parent page or site to the page picker backend. This allows them to confirm the existence of arbitrary pages and retrieve their title field values. The vulnerability does not require user interaction and has a CVSS 4.0 score of 5.3 (medium severity). It is fixed in Kirby versions 4.9.4 and 5.4.4.
Potential Impact
Authenticated users with limited permissions can confirm the existence of pages they should not access and retrieve page title information. This could lead to information disclosure about site structure or content titles without proper authorization. There is no indication of further privilege escalation or remote code execution from this vulnerability.
Mitigation Recommendations
Upgrade Kirby CMS to version 4.9.4 or later, or 5.4.4 or later, where this authorization issue has been fixed. No other mitigation or temporary workaround is indicated by the available data.
CVE-2026-49274: CWE-862: Missing Authorization in getkirby kirby
Description
Kirby is an open-source content management system. Prior to 4.9.4 and 5.4.4, Kirby sites using the pages field with roles that have the pages.access permission disabled allowed authenticated users to provide an inaccessible parent page or site to the page picker backend and confirm arbitrary page existence and retrieve title field values. This issue is fixed in versions 4.9.4 and 5.4.4.
CVSS v4.0
Score 5.3medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-49274 is a missing authorization vulnerability (CWE-862) in the Kirby content management system affecting versions before 4.9.4 and 5.4.4. When the pages field is used with roles that have the pages.access permission disabled, authenticated users can bypass intended access restrictions by providing an inaccessible parent page or site to the page picker backend. This allows them to confirm the existence of arbitrary pages and retrieve their title field values. The vulnerability does not require user interaction and has a CVSS 4.0 score of 5.3 (medium severity). It is fixed in Kirby versions 4.9.4 and 5.4.4.
Potential Impact
Authenticated users with limited permissions can confirm the existence of pages they should not access and retrieve page title information. This could lead to information disclosure about site structure or content titles without proper authorization. There is no indication of further privilege escalation or remote code execution from this vulnerability.
Mitigation Recommendations
Upgrade Kirby CMS to version 4.9.4 or later, or 5.4.4 or later, where this authorization issue has been fixed. No other mitigation or temporary workaround is indicated by the available data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-28T20:07:58.860Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a4ff3f768715ace43ecf62f
Added to database: 07/09/2026, 19:18:15 UTC
Last enriched: 07/17/2026, 09:30:39 UTC
Last updated: 08/22/2026, 22:52:14 UTC
Views: 85
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