The WPO365 | MICROSOFT 365 GRAPH MAILER plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the
Source GCVE Database
Not known to be exploited · CVSS 7.2 High · patch available : patch WPO365 | MICROSOFT 365 GRAPH MAILER (WordPress plugin) soon.
Data as of 31 Oct 2026, 10:38 UTC
Thin evidence
One scorer or none| CNA (Wordfence) | CVSS 3.1 | 7.2 |
|---|
- Patch
- Available
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 31 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| wpo365WPO365 | MICROSOFT 365 GRAPH MAILER | Affected
| Fixed in– |
AI-suggested
If you cannot patch yet, consider disabling the Graph Mailer feature or completing OAuth authorization immediately after activation to reduce exposure. Avoid using mail-sending features that forward submitter-controlled subjects until the vulnerability is addressed.
Description
The WPO365 | MICROSOFT 365 GRAPH MAILER plugin for WordPress contains a stored cross-site scripting (XSS) vulnerability in the 'Subject' parameter used in mail-sending features. This vulnerability affects all versions up to and including 6.2 and allows unauthenticated attackers to inject malicious scripts that execute when a user views the affected page. The issue arises due to insufficient input sanitization and output escaping, particularly when OAuth authorization is not completed immediately after plugin activation.
References
- nvd.nist.gov/vuln/detail/CVE-2026-107759 (opens in a new tab)
- plugins.trac.wordpress.org/browser/wpo365-msgraphmailer/tags/6.1/Core/Script_Helpers.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wpo365-msgraphmailer/tags/6.1/Mail/Mailer.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wpo365-msgraphmailer/tags/6.1/Services/Ajax_Service.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wpo365-msgraphmailer/tags/6.1/Services/Log_Service.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wpo365-msgraphmailer/tags/6.1/apps/dist/wizard-chunk-G9IB6WhS.js (opens in a new tab)
- plugins.trac.wordpress.org/changeset?reponame=&old=3752919%40wpo365-msgraphmailer&new=3752919%40wpo365-msgraphmailer (opens in a new tab)
- wordfence.com/threat-intel/vulnerabilities/id/d51ba0c2-588d-4241-977a-9649cb77c78e?source=cve (opens in a new tab)