CVE-2026-96765: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in wpo365 WPO365 | SEAMLESS WORDPRESS + MICROSOFT INTEGRATION (WPO365 | LOGIN)
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.
CVSS v3.1
Score 7.2high
Affected software
wpo365
WPO365 | SEAMLESS WORDPRESS + MICROSOFT INTEGRATION (WPO365 | LOGIN)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-96765 is a stored cross-site scripting vulnerability in the WPO365 | SEAMLESS WORDPRESS + MICROSOFT INTEGRATION (WPO365 | LOGIN) WordPress plugin. The flaw exists in the handling of the 'id_token' parameter, where insufficient sanitization and escaping allow an attacker to inject arbitrary web scripts. These scripts are stored in the wpo365_errors transient for up to three days and execute when an administrator accesses the WPO365 wizard page. Exploitation requires no prior authentication or user interaction beyond the administrator visiting the affected page. The vulnerability affects all versions up to and including 44.1.
Potential Impact
An unauthenticated attacker can inject stored malicious scripts that execute in the context of the administrator's browser when they visit the WPO365 wizard page. This can lead to partial confidentiality and integrity loss (e.g., theft of cookies or session tokens, or manipulation of page content) but does not affect availability. The vulnerability is rated high severity with a CVSS score of 7.2.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, administrators should avoid visiting the WPO365 wizard page if untrusted or unauthenticated requests can be made to the site. Monitor for updates from the vendor regarding patches or official fixes.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-09-23T16:04:46.323Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ac9f1752cdf04f65615882e
Added to database: 10/10/2026, 08:04:05 UTC
Last enriched: 10/10/2026, 08:18:14 UTC
Last updated: 10/10/2026, 21:26:57 UTC
Views: 17
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.