CVE-2026-96765CWE-79cross-site-scripting

CVE-2026-96765

High · published October 10, 2026

CVSS v3.1
7.2
EPSS
0%
Percentile
23.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00321 · 23.8th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-10-10T12:17Z
References (9)
https://plugins.trac.wordpress.org/browser/wpo365-login/tags/44.1/Core/Script_Helpers.php#L142 · [email protected]https://plugins.trac.wordpress.org/browser/wpo365-login/tags/44.1/Services/Id_Token_Service.php#L491 · [email protected]https://plugins.trac.wordpress.org/browser/wpo365-login/tags/44.1/Services/Log_Service.php#L80 · [email protected]https://plugins.trac.wordpress.org/browser/wpo365-login/tags/44.1/Services/Request_Service.php#L54 · [email protected]https://plugins.trac.wordpress.org/browser/wpo365-login/tags/44.1/Services/Router_Service.php#L97 · [email protected]https://plugins.trac.wordpress.org/browser/wpo365-login/tags/44.1/apps/dist/wizard-chunk-BpsKdXb9.js#L350 · [email protected]https://plugins.trac.wordpress.org/browser/wpo365-login/tags/45.0/apps/dist/wizard-chunk-BpsKdXb9.js · [email protected]https://plugins.trac.wordpress.org/changeset/3727410/wpo365-login · [email protected]https://www.wordfence.com/threat-intel/vulnerabilities/id/7d6509b7-c1c1-44ef-9a86-d77cfb7fd5bd?source=cve · [email protected]
EPSS history
Timeline
  • 11 OCT 03:33Z
    EPSS moved — → 0%
    epss
  • 10 OCT 07:41Z
    WPO365 | SEAMLESS WORDPRESS + MICROSOFT INTEGRATION (WPO365 | LOGIN) <= 44.1 - Unauthenticated Stored Cross-Site Scripting via 'id_token' Parameter (iss / unique_name JWT claims)
    cvelistv5
  • 10 OCT 07:41Z
    WPO365 | SEAMLESS WORDPRESS + MICROSOFT INTEGRATION (WPO365 | LOGIN) <= 44.1 - Unauthenticated Stored Cross-Site Scripting via 'id_token' Parameter (iss / unique_name JWT claims)
    cvelistv5