Answer in brief
CVE-2026-107759 records a High severity (CVSS 7.2) vulnerability in WPO365 | MICROSOFT 365 GRAPH MAILER <= 6.2 - Unauthenticated Stored Cross-Site Scripting via Email Subject via wp_mail. The current sources do not mark it as known exploited. The current feed maps wpo365/WPO365 | MICROSOFT 365 GRAPH MAILER (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps wpo365/WPO365 | MICROSOFT 365 GRAPH MAILER (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| wpo365/WPO365 | MICROSOFT 365 GRAPH MAILERgeneric | >=0 <=6.2 | Not reported |
Published upstream
Oct 31, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 31, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 31, 2026
The WPO365 | MICROSOFT 365 GRAPH MAILER plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'Subject (via wp_mail/PHPMailer, e.g. CF7 your-subject)' parameter in all versions up to, and including, 6.2 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 without authentication via any mail-sending feature that forwards a submitter-controlled subject (e.g. a Contact Form 7 form) when the Graph Mailer is enabled but OAuth authorization has not been completed, a default state immediately after plugin activation.
Quoted source text, attributed separately from HOL analysis.