CVE-2026-75592
- Source
- https://cve.org/CVERecord?id=CVE-2026-75592
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-75592.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-75592
- Aliases
- Published
- 2026-08-31T20:49:41Z
- Modified
- 2026-11-04T02:45:44Z
- Severity
-
- 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N CVSS Calculator
- Summary
- Kirby: Access to image files outside of the site root via path traversal in the media handling
- Details
-
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 used incomplete filesystem containment checks in src/Filesystem/Dir.php and src/Filesystem/F.php through Kirby\Filesystem\Dir::realpath() and Kirby\Filesystem\F::realpath(). The checks accepted a sibling directory whose path shared the intended root's string prefix, such as /var/www/site2 next to /var/www/site, because they did not require an exact match or a DIRECTORY_SEPARATOR boundary. A remote attacker could use Kirby\Cms\Media::thumb() to create and access thumbnails from image files in a PHP-readable sibling directory when that directory contained a valid .json thumbnail job file, potentially exposing staging sites, backups, or other internal sites and deleting the job file during processing. This issue is fixed in versions 4.9.5 and 5.5.2.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-22" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75592.json", "unresolved_ranges": [ { "extracted_events": [ { "range": [ { "fixed": "4.9.5" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" } ] } ] }- References
-
- https://github.com/getkirby/kirby/releases/tag/4.9.5
- https://github.com/getkirby/kirby/releases/tag/5.5.2
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75592.json
- https://github.com/getkirby/kirby/security/advisories/GHSA-6j4c-mgqr-qv76
- https://nvd.nist.gov/vuln/detail/CVE-2026-75592
- https://github.com/getkirby/kirby/commit/2b6fab950bc89d505ea89576bf71c8de614cc3b2
- https://github.com/getkirby/kirby/commit/e0dca5f709adc21b36f5549df2c0619bc59da56c
Affected packages
Git / github.com/getkirby/kirby
Affected ranges
- Type
- GIT
- Repo
- https://github.com/getkirby/kirby
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "5.0.0" }, { "fixed": "5.5.2" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "fixed": "2b6fab950bc89d505ea89576bf71c8de614cc3b2" } ], "source": "REFERENCES_COMMIT" }, { "range": [ { "fixed": "e0dca5f709adc21b36f5549df2c0619bc59da56c" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "4.9.5", "range": [ { "fixed": "61b1a486084249a81d4c7f5735fbc18a5d1de5da" } ], "source": "REFERENCES_TAG" }, { "original_tag": "5.5.2", "range": [ { "fixed": "81689c7f1471beb1fa9fb9c686f6f071f8671c3c" } ], "source": "REFERENCES_TAG" } ] }