CVE-2026-91751

EUVD-2026-78233
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.
Path Traversal
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.3 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Common Weakness Enumeration
References
https://github.com/flextype/flextype
https://github.com/flextype/flextype/blob/v1.0.0-alpha.3/src/flextype/core/Entries/Entries.php#L856-L906
https://github.com/flextype/flextype/issues/596
https://www.vulncheck.com/advisories/flextype-cms-through-1.0.0-alpha.3-path-traversal-via-entries-rest-api