CVE-2026-91751
High
Description
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 sequences in API requests to escape the project entries directory and manipulate arbitrary files and directories on the filesystem.
SeverityHigh
CVSS8.3
Exploit probability—
ProductFlextype
PublishedSep 15, 2026
First seenSep 15, 2026
Weakness typeCWE-22Path traversal
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| flextype flextype | v ≤ 1.0.0-alpha.3 | — |
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