Modular Connector <= 2.5.1 - Cross-Site Request Forgery via postConfirmOauth
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Tampering
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-352.
Summary
The Modular DS: Monitor, update, and backup multiple websites plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.5.1. This is due to missing nonce validation on the postConfirmOauth() function. This makes it possible for unauthenticated attackers to disconnect the plugin's OAuth/SSO connection via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Modular DS | Modular DS: Monitor, update, and backup multiple websites | up to 2.5.1 | — | No fix listed | CNA |
- Modular DS: Monitor, update, and backup multiple websites VendorModular DS Affected up to 2.5.1 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-3903
- 2026-10-03 Alias added: GHSA-6qpq-j4q7-x5cr
References
More Modular DS vulnerabilities
- TI-2026-18972 WordPress Modular DS plugin <= 2.5.1 - Privilege Escalation vulnerability CVSS 3.1CRITICAL 10.0
Sources
- CVE-2026-3903 · CVE Program
- CVE-2026-3903 · NVD
- FIRST EPSS
- GHSA-6qpq-j4q7-x5cr · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences