CVE-2016-9493 - CVE House
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Status published Medium CVE-2016-9493

PHP forms generated using the PHP FormMail Generator are vulnerable to stored cross-site scripting

Vulnerability Description

The code generated by PHP FormMail Generator prior to 17 December 2016 is vulnerable to stored cross-site scripting. In the generated form.lib.php file, upload file types are checked against a hard-coded list of dangerous extensions. This list does not include all variations of PHP files, which may lead to execution of the contained PHP code if the attacker can guess the uploaded filename. The form by default appends a short random string to the end of the filename.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Thanks to Ibram Marzouk for reporting this vulnerability.

References

More from PHP FormMail

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CVE-2016-9492
PHP forms generated using the PHP FormMail Generator are vulnerable to unrestricted upload of dangerous file types
Critical 9.8
CVE-2016-9484
PHP FormMail Generator generates PHP code for standard web forms, and the code generated does not properly validate user input folder directories and is vulnerable to path traversal
High 7.5
CVE-2016-9483
PHP FormMail Generator generates PHP code for standard web forms, and the code generated is vulnerable to unsafe deserialization of untrusted data
Critical 9.8
CVE-2016-9482
PHP FormMail Generator generates PHP code for standard web forms, and the code generated is vulnerable to authentication bypass
Critical 9.8

Affected Vendor

PHP FormMail

View all reports →

Affected Software

Generator
Vulnerable Versions:
17/12/2016

Timeline

Official Publish: July 13th, 2018
Last Modified: August 6th, 2024
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weaknesses (CWE)

CWE-80

MITRE ATT&CK TTPs

T1189 Drive-by Compromise
Initial Access
T1059 Command and Scripting Interpreter
Execution
T1552 Unsecured Credentials
Credential Access
T1071 Application Layer Protocol
Command and Control
T1565 Data Manipulation
Impact