User Sync – Remote User Sync <= 1.0.2 - Cross-Site Request Forgery to Plugin Deactivation
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 User Sync – Remote User Sync plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0.2. This is due to missing or incorrect nonce validation on the mo_user_sync_form_handler() function. This makes it possible for unauthenticated attackers to deactivate the plugin 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 |
|---|---|---|---|---|---|
| miniOrange | User Sync | up to 1.0.2 | — | No fix listed | CNA |
- User Sync VendorminiOrange Affected up to 1.0.2 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-9891
- 2026-10-03 Alias added: GHSA-ph6f-26jp-xf5f
References
Other 3
- https://www.wordfence.com/threat-intel/vulnerabilities/id/6b60777e-6e07-42bd-9364-43367e209227?source=cve
- https://plugins.trac.wordpress.org/browser/user-sync/tags/1.0.1/mo-user-sync-main.php#L118
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3360328%40user-sync&new=3360328%40user-sync&sfp_email=&sfph_mail=
More miniOrange vulnerabilities
- TI-2023-05558 Web3 – Crypto wallet Login & NFT token gating < 3.0.0 - Authentication Bypass CVSS 3.1CRITICAL 9.8
- TI-2023-02794 WordPress Social Login and Register (Discord, Google, Twitter, LinkedIn) <= 7.6.4 - Authentication Bypass CVSS 3.1CRITICAL 9.8
- TI-2022-15071 WordPress OAuth Single Sign On – SSO (OAuth Client) Plugin <= 6.23.3 is vulnerable to Broken Authentication CVSS 3.1HIGH 8.8
- TI-2021-22592 WordPress Plugin Backup and Restore 1.0.3 Arbitrary File Deletion CVSS 4.0HIGH 8.7
- TI-2023-04605 Active Directory Integration < 4.1.10 - Unauthenticated Log Disclosure CVSS 3.1HIGH 7.5
- TI-2024-09173 Login using WordPress Users ( WP as SAML IDP ) <= 1.15.6 - Authenticated (Administrator+) SQL Injection CVSS 3.1HIGH 7.2
Sources
- CVE-2025-9891 · CVE Program
- CVE-2025-9891 · NVD
- FIRST EPSS
- GHSA-ph6f-26jp-xf5f · 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