{"id":"CVE-2026-91751","title":"Flextype CMS through 1.0.0-alpha.3 fails to properly validate id and new_id parameters in the Entries REST API, allowing API token holders to read, create, or overwrite files outside the entries directory","summary":"Flextype CMS through 1.0.0-alpha.3 fails to properly validate id and new_id parameters in the Entries REST API, allowing API token holders to read, create, or overwrite files outside the entries directory. Attackers can use traversal seq…","severity":"high","cvss":8.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H","cwe":["CWE-22"],"vendor":"flextype","product":"flextype","affected":["flextype <= 1.0.0-alpha.3"],"published":"2026-09-15","updated":"2026-09-16","sourceUpdated":"2026-09-16T19:47:01.197","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-91751","references":[{"url":"https://github.com/flextype/flextype","label":"disclosure@vulncheck.com"},{"url":"https://github.com/flextype/flextype/blob/v1.0.0-alpha.3/src/flextype/core/Entries/Entries.php#L856-L906","label":"disclosure@vulncheck.com"},{"url":"https://github.com/flextype/flextype/issues/596","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/flextype-cms-through-1.0.0-alpha.3-path-traversal-via-entries-rest-api","label":"disclosure@vulncheck.com"},{"url":"https://github.com/flextype/flextype/issues/596","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.00346,"epssPercentile":0.28265,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-09-15T19:05:57.635722Z"},"ingestedAt":"2026-09-15T01:18:29.937Z","slug":"CVE-2026-91751","body":"## Overview\n\nFlextype CMS through 1.0.0-alpha.3 fails to properly validate id and new_id parameters in the Entries REST API, allowing API token holders to read, create, or overwrite files outside the entries directory. Attackers can use traversal sequences in API requests to escape the project entries directory and manipulate arbitrary files and directories on the filesystem.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":58,"depthScoreParts":{"impact":45.7,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":204475,"id":"CVE-2026-91751","ts":1789501414133,"field":"exploit_available","old":"false","new":"true"}]}