Kirby is an open-source content management system. Prior to 4.9.5 and 5.5.2, depending on the release line, Kirby's media handler in src/Cms/Media.php allowed Kirby\Cms\Media::thumb() to append a path-bearing filename to a validated parent media directory. On nginx, PHP's built-in server, or Apache with AllowEncodedSlashes enabled, a remote attacker could submit encoded slash characters such as %2f in the filename and traverse outside the parent's media directory. Differences between responses for existing and nonexistent thumbnail configurations disclosed whether an arbitrary .json file existed, and a .json file containing a valid filename key could cause the referenced image to be returned and the job file to be deleted. The related file::version path in src/Filesystem/Asset.php also accepted ../ sequences outside the intended index root. This issue is fixed in versions 4.9.5 and 5.5.2.
Metrics
Affected Vendors & Products
References
History
Tue, 01 Sep 2026 15:30:00 +0000
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ssvc
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Mon, 31 Aug 2026 22:45:00 +0000
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Getkirby
Getkirby kirby |
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Getkirby
Getkirby kirby |
Mon, 31 Aug 2026 21:00:00 +0000
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| Description | Kirby is an open-source content management system. Prior to 4.9.5 and 5.5.2, depending on the release line, Kirby's media handler in src/Cms/Media.php allowed Kirby\Cms\Media::thumb() to append a path-bearing filename to a validated parent media directory. On nginx, PHP's built-in server, or Apache with AllowEncodedSlashes enabled, a remote attacker could submit encoded slash characters such as %2f in the filename and traverse outside the parent's media directory. Differences between responses for existing and nonexistent thumbnail configurations disclosed whether an arbitrary .json file existed, and a .json file containing a valid filename key could cause the referenced image to be returned and the job file to be deleted. The related file::version path in src/Filesystem/Asset.php also accepted ../ sequences outside the intended index root. This issue is fixed in versions 4.9.5 and 5.5.2. | |
| Title | Kirby: Access to image files and limited access to JSON files outside of the site root via path traversal in the media handling | |
| Weaknesses | CWE-22 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-09-01T14:31:42.348Z
Reserved: 2026-08-17T23:49:03.449Z
Link: CVE-2026-75594
Updated: 2026-09-01T14:31:27.921Z
Status : Received
Published: 2026-08-31T21:17:48.760
Modified: 2026-09-01T15:17:27.063
Link: CVE-2026-75594
No data.
OpenCVE Enrichment
Updated: 2026-08-31T23:15:04Z