What’s Vulnerable › Vulnerabilities

CVE-2018-6411

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-05-26 · updated 2026-06-17
• Weakness: CWE-434

Description

An issue was discovered in Appnitro MachForm before 4.2.3. When the form is set to filter a blacklist, it automatically adds dangerous extensions to the filters. If the filter is set to a whitelist, the dangerous extensions can be bypassed through ap_form_elements SQL Injection.

Affected products

• AppNitro Machform: 4.2.3

References

• https://metalamin.github.io/MachForm-not-0-day-EN/
• https://www.exploit-db.com/exploits/44804/
• https://www.machform.com/blog-machform-423-security-release/
• https://metalamin.github.io/MachForm-not-0-day-EN/
• https://www.exploit-db.com/exploits/44804/
• https://www.machform.com/blog-machform-423-security-release/

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