Clockwork SMS Plugins — Multiple Versions - Cross-Site Scripting
CVE-2017-17780Published · Updated Action summary
Clockwork SMS Notfications: Affected: ≤2.0.3No patch available
Booking Calendar – Clockwork SMS: Affected: ≤1.0.5Update to 1.1.1 or newer
Two-Factor Authentication – Clockwork SMS: Affected: ≤1.0.2Update to 1.1.1 or newer
Formidable – Clockwork SMS: Affected: ≤1.0.2Update to 1.1.1 or newer
Gravity Forms – Clockwork SMS: Affected: ≤2.2Update to 2.4.1 or newer
Contact Form 7 – Clockwork SMS: Affected: ≤2.3.0Update to 2.4.1 or newer
WP e-Commerce – Clockwork SMS: Affected: ≤2.0.5Update to 2.4.1 or newer
Fast Secure Contact Form – Clockwork SMS: Affected: ≤2.1.2Update to 2.4.1 or newer
What to do until a fix ships- Severity
- Medium6.1
- CVSS
- 6.1CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:RUser interaction- Required
S:CScope- Changed
C:LConfidentiality- Low
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-79 Cross-Site Scripting
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Clockwork SMS Notfications mediaburst-email-to-sms
- Affected≤ 2.0.3
- PatchedNo fix yet
No patched version available.
You are affected if you run ≤ 2.0.3. No fixed version has been released.
Booking Calendar – Clockwork SMS booking-sms
- Affected≤ 1.0.5
- Patched in1.1.1
Update to 1.1.1 or newer.
You are affected if you run ≤ 1.0.5. Version 1.1.1 and later are not affected by this issue.
Two-Factor Authentication – Clockwork SMS clockwork-two-factor-authentication
- Affected≤ 1.0.2
- Patched in1.1.1
Update to 1.1.1 or newer.
You are affected if you run ≤ 1.0.2. Version 1.1.1 and later are not affected by this issue.
Formidable – Clockwork SMS formidable-sms
- Affected≤ 1.0.2
- Patched in1.1.1
Update to 1.1.1 or newer.
You are affected if you run ≤ 1.0.2. Version 1.1.1 and later are not affected by this issue.
Gravity Forms – Clockwork SMS gravity-forms-sms-notifications
- Affected≤ 2.2
- Patched in2.4.1
Update to 2.4.1 or newer.
You are affected if you run ≤ 2.2. Version 2.4.1 and later are not affected by this issue.
Contact Form 7 – Clockwork SMS contact-form-7-sms-addon
- Affected≤ 2.3.0
- Patched in2.4.1
Update to 2.4.1 or newer.
You are affected if you run ≤ 2.3.0. Version 2.4.1 and later are not affected by this issue.
WP e-Commerce – Clockwork SMS mediaburst-ecommerce-sms-notifications
- Affected≤ 2.0.5
- Patched in2.4.1
Update to 2.4.1 or newer.
You are affected if you run ≤ 2.0.5. Version 2.4.1 and later are not affected by this issue.
Fast Secure Contact Form – Clockwork SMS fscf-sms
- Affected≤ 2.1.2
- Patched in2.4.1
Update to 2.4.1 or newer.
You are affected if you run ≤ 2.1.2. Version 2.4.1 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Clockwork SMS Notfications.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
- Update to version 1.1.1, or a newer patched version
- Update to version 1.1.1, or a newer patched version
- Update to version 1.1.1, or a newer patched version
- Update to version 2.4.1, or a newer patched version
- Update to version 2.4.1, or a newer patched version
- Update to version 2.4.1, or a newer patched version
- Update to version 2.4.1, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Clockwork SMS Notfications to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Dimopoulos Elias.
The Clockwork SMS clockwork-test-message.php component has XSS via a crafted "to" parameter in a clockwork-test-message request to wp-admin/admin.php. This component code is found in the following WordPress plugins: Clockwork Free and Paid SMS Notifications 2.0.3, Two-Factor Authentication - Clockwork SMS 1.0.2, Booking Calendar - Clockwork SMS 1.0.5, Contact Form 7 - Clockwork SMS 2.3.0, Fast Secure Contact Form - Clockwork SMS 2.1.2, Formidable - Clockwork SMS 1.0.2, Gravity Forms - Clockwork SMS 2.2, and WP e-Commerce - Clockwork SMS 2.0.5.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Clockwork SMS Notfications
All 3| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium6.6 | Authenticated(Administrator+) SQL Injection ≤3.0.4No patch available | CVE-2023-50843 | |
| Medium6.1 | Cross-Site Scripting <2.4.2Update to 2.4.2 | CVE-2017-18495 |
- Medium6.6Authenticated(Administrator+) SQL Injection
≤3.0.4No patch available
- Medium6.1Cross-Site Scripting
<2.4.2Update to 2.4.2
Same weakness (Cross-Site Scripting)
All Cross-Site Scripting| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
≤5.25.25Update to 5.26.45
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity medium, CVSS 6.1
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.