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
Published Aug 6, 2018
6.5
MEDIUMCVSS 3.0
EPSS 1.57%
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.
Affected products
No data.
Configuration 1
- ≥ 2.7.0 · ≤ 2.7.37
- ≥ 2.8.0 · ≤ 2.8.30
- ≥ 3.2.0 · ≤ 3.2.13
- ≥ 3.3.0 · ≤ 3.3.12
Configuration 2
- 9.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
AV:N/AC:L/Au:S/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.57% (0.01568) | 74.45th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.55% (0.01555) | 74.04th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.06% (0.00059) | 25.47th | v3 (v2023.03.01) |
| May 25, 2024 | 0.06% (0.00059) | 24.72th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00059) | 22.70th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.62% (0.00624) | 17.80th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.62% (0.00624) | 0.00th | v1 |
References (8)
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/form/CVE-2017-16790.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2017-16790.yaml
- https://github.com/advisories/GHSA-cqqh-94r6-wjrg Advisory
- https://github.com/symfony/symfony/pull/24993
- https://nvd.nist.gov/vuln/detail/CVE-2017-16790
- https://symfony.com/blog/cve-2017-16790-ensure-that-submitted-data-are-uploaded-files x_refsource_CONFIRMIssue TrackingPatchVendor Advisory
- https://symfony.com/cve-2017-16790
- https://www.debian.org/security/2018/dsa-4262 vendor-advisoryx_refsource_DEBIANThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/form/CVE-2017-16790.yaml | ||
| https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2017-16790.yaml | ||
| https://github.com/advisories/GHSA-cqqh-94r6-wjrg | Advisory | |
| https://github.com/symfony/symfony/pull/24993 | ||
| https://nvd.nist.gov/vuln/detail/CVE-2017-16790 | ||
| https://symfony.com/blog/cve-2017-16790-ensure-that-submitted-data-are-uploaded-files | x_refsource_CONFIRMIssue TrackingPatchVendor Advisory | |
| https://symfony.com/cve-2017-16790 | ||
| https://www.debian.org/security/2018/dsa-4262 | vendor-advisoryx_refsource_DEBIANThird Party Advisory |
Change history (0)
No recorded changes yet.