Kirby CMS through 5.1.4 allows an authenticated user with 'Editor' permissions to cause a persistent Denial of Service (DoS) via a malformed image upload. The application fails to properly validate the return value of the PHP getimagesize() function. When the system attempts to process this file for metadata or thumbnail generation, it triggers a fatal TypeError.
Metrics
Affected Vendors & Products
References
History
Fri, 27 Mar 2026 09:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Persistent Denial of Service via Malformed Image Upload in Kirby CMS |
Fri, 27 Mar 2026 08:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Getkirby
Getkirby kirby |
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| Vendors & Products |
Getkirby
Getkirby kirby |
Thu, 26 Mar 2026 19:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-20 CWE-252 |
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| Metrics |
cvssV3_1
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Thu, 26 Mar 2026 16:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Kirby CMS through 5.1.4 allows an authenticated user with 'Editor' permissions to cause a persistent Denial of Service (DoS) via a malformed image upload. The application fails to properly validate the return value of the PHP getimagesize() function. When the system attempts to process this file for metadata or thumbnail generation, it triggers a fatal TypeError. | |
| References |
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Status: PUBLISHED
Assigner: mitre
Published: 2026-03-26T00:00:00.000Z
Updated: 2026-03-26T18:31:41.421Z
Reserved: 2026-03-04T00:00:00.000Z
Link: CVE-2026-29905
Updated: 2026-03-26T18:28:53.512Z
Status : Awaiting Analysis
Published: 2026-03-26T17:16:34.660
Modified: 2026-03-30T13:26:50.827
Link: CVE-2026-29905
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