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CVE-2025-9891

User Sync – Remote User Sync <= 1.0.2 - Cross-Site Request Forgery to Plugin Deactivation

Published: Sep 17, 2025Updated: Sep 17, 2025 Sources: CVE List NVDCWE-352
NVD MITRE
4.3CVSSMEDIUM
EPSS Score
0.2%
Top 91.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
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Description

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-352

Affected Products

User Synccyberlord92
Mixed
Security Products / identity-access-mgmt
cyberlord92individual-devSecurity Productsaka active directory integration / ldap integration, miniorange otp verification with firebase, oauth single sign on – sso (oauth client)

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Initial Access
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References

https://www.wordfence.com/threat-intel/vulnerabilities/id/6b60777e-6e07-42bd-9364-43367e209227?source=cve
wordfence.com
https://plugins.trac.wordpress.org/browser/user-sync/tags/1.0.1/mo-user-sync-main.php#L118
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3360328%40user-sync&new=3360328%40user-sync&sfp_email=&sfph_mail=
plugins.trac.wordpress.org

Timeline

Published
Sep 17, 2025
Last Updated
Sep 17, 2025

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