CVE-2026-96765 json
WPO365 | SEAMLESS WORDPRESS + MICROSOFT INTEGRATION (WPO365 | LOGIN) <= 44.1 - Unauthenticated Stored Cross-Site Scripting via 'id_token' Parameter (iss / unique_name JWT claims)
published 2026-10-10 30 d ago modified 2026-10-13 27 d ago also EUVD-2026-96281
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 25%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 29 d ago
Exploit prediction
0.32% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
Affected products
- wpo365 WPO365 | SEAMLESS WORDPRESS + MICROSOFT INTEGRATION (WPO365 | LOGIN)
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/7d6509b7-c1c1-44ef-9a86-d77cfb7fd5bd?source=cve
- plugins.trac.wordpress.org /browser/wpo365-login/tags/44.1/apps/dist/wizard-chunk-BpsKdXb9.js#L350
- plugins.trac.wordpress.org /browser/wpo365-login/tags/44.1/Services/Id_Token_Service.php#L491
- plugins.trac.wordpress.org /browser/wpo365-login/tags/44.1/Services/Log_Service.php#L80
- plugins.trac.wordpress.org /browser/wpo365-login/tags/44.1/Core/Script_Helpers.php#L142
- plugins.trac.wordpress.org /browser/wpo365-login/tags/44.1/Services/Router_Service.php#L97
- plugins.trac.wordpress.org /browser/wpo365-login/tags/44.1/Services/Request_Service.php#L54
- plugins.trac.wordpress.org /changeset/3727410/wpo365-login
- plugins.trac.wordpress.org /browser/wpo365-login/tags/45.0/apps/dist/wizard-chunk-BpsKdXb9.js
Sources
- CVE List CVE-2026-96765
- NVD CVE-2026-96765
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.