WPO365 | SEAMLESS WORDPRESS + MICROSOFT INTEGRATION (WPO365 | LOGIN) <= 44.1 - Unauthenticated Stored Cross-Site Scripting via 'id_token' Parameter (iss / unique_name JWT claims)
Summary
| CVE | CVE-2026-96765 |
|---|---|
| State | PUBLISHED |
| Assigner | Wordfence |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-10 08:17:08 UTC |
| Updated | 2026-10-13 13:30:21 UTC |
| Description | The WPO365 | SEAMLESS WORDPRESS + MICROSOFT INTEGRATION (WPO365 | LOGIN) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'id_token' parameter in all versions up to, and including, 44.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The payload is stored in the wpo365_errors transient for up to three days by submitting a crafted unauthenticated request with a forged id_token whose base64url-decoded unique_name or iss claim contains malicious HTML, requiring no prior authentication or user interaction beyond an administrator later visiting the WPO365 wizard page. |
Risk And Classification
Primary CVSS: v3.1 7.2 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
EPSS: 0.003210000 probability, percentile 0.232040000 (date 2026-10-12)
Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 7.2 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
| 3.1 | CNA | DECLARED | 7.2 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
ChangedConfidentiality
LowIntegrity
LowAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Wpo365 | WPO365 SEAMLESS WORDPRESS MICROSOFT INTEGRATION WPO365 LOGIN | affected 44.1 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| plugins.trac.wordpress.org/browser/wpo365-login/tags/44.1/Services/Id_Token_Service.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/wpo365-login/tags/44.1/Services/Log_Service.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/wpo365-login/tags/44.1/Services/Request_Service.php | [email protected] | plugins.trac.wordpress.org | |
| www.wordfence.com/threat-intel/vulnerabilities/id/7d6509b7-c1c1-44ef-9a86-d77cf... | [email protected] | www.wordfence.com | |
| plugins.trac.wordpress.org/browser/wpo365-login/tags/44.1/Core/Script_Helpers.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/changeset/3727410/wpo365-login | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/wpo365-login/tags/44.1/Services/Router_Service.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/wpo365-login/tags/45.0/apps/dist/wizard-chunk-BpsKdXb... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/wpo365-login/tags/44.1/apps/dist/wizard-chunk-BpsKdXb... | [email protected] | plugins.trac.wordpress.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Sebastian Albrecht (mySebbe) (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-09-23T16:19:51.000Z | Vendor Notified |
| CNA | 2026-10-09T19:22:22.000Z | Disclosed |
There are currently no legacy QID mappings associated with this CVE.