{"cve":"CVE-2017-16790","nvd":{"published":"2018-08-06T21:29:00.407","modified":"2026-06-17T01:09:55.853","status":"Modified","description":"An issue was discovered in Symfony before 2.7.38, 2.8.31, 3.2.14, 3.3.13, 3.4-BETA5, and 4.0-BETA5. When a form is submitted by the user, the request handler classes of the Form component merge POST data and uploaded files data into one array. This big array forms the data that are then bound to the form. At this stage there is no difference anymore between submitted POST data and uploaded files. A user can send a crafted HTTP request where the value of a \"FileType\" is sent as normal POST data that could be interpreted as a local file path on the server-side (for example, \"file:///etc/passwd\"). If the application did not perform any additional checks about the value submitted to the \"FileType\", the contents of the given file on the server could have been exposed to the attacker.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":6.5},"cwes":["CWE-20"],"references":["https://symfony.com/blog/cve-2017-16790-ensure-that-submitted-data-are-uploaded-files","https://www.debian.org/security/2018/dsa-4262","https://symfony.com/blog/cve-2017-16790-ensure-that-submitted-data-are-uploaded-files","https://www.debian.org/security/2018/dsa-4262"],"products":["debian:debian_linux","sensiolabs:symfony"],"source":"nvd","synced_at":"2026-10-19T20:52:03.425131697+00:00"},"epss":{"cve":"CVE-2017-16790","score":0.01568,"percentile":0.75338,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}