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8 vulnerabilities found for MetForm by Unknown
CVE-2026-86833 (GCVE-0-2026-86833)
Vulnerability from nvd – Published: 2026-10-07 06:47 – Updated: 2026-10-07 09:49
VLAI
EPSS
VEX
Title
MetForm < 4.3.1 - Unauthenticated HTML Injection in Notification Emails via Field Shortcodes
Summary
The MetForm WordPress plugin before 4.3.1 does not sanitize or escape submitted form-field values before inserting them into the HTML body of its email notifications, allowing unauthenticated attackers to inject arbitrary markup into the administrator and submitter notification emails the site sends.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-07 09:49 UTC
CWE
- CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
- CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wpscan.com/vulnerability/6d6850d6-6fdf-4b… | exploitvdb-entrytechnical-description |
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CVE-2026-86834 (GCVE-0-2026-86834)
Vulnerability from nvd – Published: 2026-10-03 06:00 – Updated: 2026-10-03 15:12
VLAI
EPSS
VEX
Title
MetForm 2.2.1 - 4.3.0 - Unauthenticated Debug File Disclosure via HubSpot Forms Integration
Summary
The MetForm WordPress plugin before 4.3.1 does not properly restrict access to a debug file it writes to the web root on every form submission when its HubSpot Forms integration is enabled, allowing unauthenticated attackers to read upstream API response data, including correlation identifiers and cookies.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-03 15:01 UTC
CWE
- CWE-200 Information Exposure
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wpscan.com/vulnerability/a56b7e26-9070-4c… | exploitvdb-entrytechnical-description |
Impacted products
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CVE-2026-86832 (GCVE-0-2026-86832)
Vulnerability from nvd – Published: 2026-10-03 06:00 – Updated: 2026-10-03 15:12
VLAI
EPSS
VEX
Title
MetForm < 4.3.1 - Unauthenticated Form Entry Data Disclosure via REST API
Summary
The MetForm WordPress plugin before 4.3.1 does not properly restrict access to form submission data, allowing unauthenticated attackers to view submitter information through the REST API.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-03 15:02 UTC
CWE
- CWE-200 Information Exposure
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wpscan.com/vulnerability/d73e4c95-471b-4f… | exploitvdb-entrytechnical-description |
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CVE-2026-86813 (GCVE-0-2026-86813)
Vulnerability from nvd – Published: 2026-09-11 10:56 – Updated: 2026-09-11 12:06
VLAI
EPSS
VEX
Title
MetForm < 4.1.9 - Unauthenticated Email Header Injection via Notification Reply-To
Summary
The MetForm WordPress plugin before 4.1.9 does not properly neutralize newline characters in user-submitted values that are placed into notification email headers, allowing unauthenticated attackers to inject additional email headers, such as Bcc, into the emails the site sends when a submitted field value is configured to populate a header.
Severity
4.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-11 12:05 UTC
CWE
- CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wpscan.com/vulnerability/afda2a26-b965-42… | exploitvdb-entrytechnical-description |
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CVE-2026-86833 (GCVE-0-2026-86833)
Vulnerability from cvelistv5 – Published: 2026-10-07 06:47 – Updated: 2026-10-07 09:49
VLAI
EPSS
VEX
Title
MetForm < 4.3.1 - Unauthenticated HTML Injection in Notification Emails via Field Shortcodes
Summary
The MetForm WordPress plugin before 4.3.1 does not sanitize or escape submitted form-field values before inserting them into the HTML body of its email notifications, allowing unauthenticated attackers to inject arbitrary markup into the administrator and submitter notification emails the site sends.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-07 09:49 UTC
CWE
- CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
- CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wpscan.com/vulnerability/6d6850d6-6fdf-4b… | exploitvdb-entrytechnical-description |
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CVE-2026-86834 (GCVE-0-2026-86834)
Vulnerability from cvelistv5 – Published: 2026-10-03 06:00 – Updated: 2026-10-03 15:12
VLAI
EPSS
VEX
Title
MetForm 2.2.1 - 4.3.0 - Unauthenticated Debug File Disclosure via HubSpot Forms Integration
Summary
The MetForm WordPress plugin before 4.3.1 does not properly restrict access to a debug file it writes to the web root on every form submission when its HubSpot Forms integration is enabled, allowing unauthenticated attackers to read upstream API response data, including correlation identifiers and cookies.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-03 15:01 UTC
CWE
- CWE-200 Information Exposure
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wpscan.com/vulnerability/a56b7e26-9070-4c… | exploitvdb-entrytechnical-description |
Impacted products
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CVE-2026-86832 (GCVE-0-2026-86832)
Vulnerability from cvelistv5 – Published: 2026-10-03 06:00 – Updated: 2026-10-03 15:12
VLAI
EPSS
VEX
Title
MetForm < 4.3.1 - Unauthenticated Form Entry Data Disclosure via REST API
Summary
The MetForm WordPress plugin before 4.3.1 does not properly restrict access to form submission data, allowing unauthenticated attackers to view submitter information through the REST API.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-03 15:02 UTC
CWE
- CWE-200 Information Exposure
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wpscan.com/vulnerability/d73e4c95-471b-4f… | exploitvdb-entrytechnical-description |
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CVE-2026-86813 (GCVE-0-2026-86813)
Vulnerability from cvelistv5 – Published: 2026-09-11 10:56 – Updated: 2026-09-11 12:06
VLAI
EPSS
VEX
Title
MetForm < 4.1.9 - Unauthenticated Email Header Injection via Notification Reply-To
Summary
The MetForm WordPress plugin before 4.1.9 does not properly neutralize newline characters in user-submitted values that are placed into notification email headers, allowing unauthenticated attackers to inject additional email headers, such as Bcc, into the emails the site sends when a submitted field value is configured to populate a header.
Severity
4.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-11 12:05 UTC
CWE
- CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wpscan.com/vulnerability/afda2a26-b965-42… | exploitvdb-entrytechnical-description |
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