CVE-2025-23703
WordPress Free MailClient FMC plugin <= 1.0 - CSRF to Stored XSS vulnerability
Cross-Site Request Forgery (CSRF) vulnerability in cstoltenkamp Free MailClient FMC mailclient allows Stored XSS.This issue affects Free MailClient FMC: from n/a through <= 1.0.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
WordPress Free MailClient FMC plugin <= 1.0 - CSRF to Stored XSS vulnerability
Cross-Site Request Forgery (CSRF) vulnerability in cstoltenkamp Free MailClient FMC mailclient allows Stored XSS.This issue affects Free MailClient FMC: from n/a through <= 1.0.
- Record
CVE-2025-23703- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L - Weakness
- CWE-352
- Updated
- 2026-11-02
EUVDEUVD-2025-3359
Cross-Site Request Forgery (CSRF) vulnerability in cstoltenkamp Free MailClient FMC mailclient allows Stored XSS.This issue affects Free MailClient FMC: from n/a through <= 1.0.
- Record
EUVD-2025-3359- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-gh9p-4cw5-w8fw
Cross-Site Request Forgery (CSRF) vulnerability in CS : ABS-Hosting.nl / Walchum.net Free...
Cross-Site Request Forgery (CSRF) vulnerability in CS : ABS-Hosting.nl / Walchum.net Free MailClient FMC allows Stored XSS.This issue affects Free MailClient FMC: from n/a through 1.0.
- Record
GHSA-gh9p-4cw5-w8fw- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L - Weakness
- CWE-352
- Updated
- 2026-11-02
NVD
Cross-Site Request Forgery (CSRF) vulnerability in cstoltenkamp Free MailClient FMC mailclient allows Stored XSS.This issue affects Free MailClient FMC: from n/a through <= 1.0.
- Record
CVE-2025-23703- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L - Weakness
- CWE-352
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-23703 is a high vulnerability (CVSS 7.1) in Cs : Abs-hosting.nl / Walchum.net Free Mailclient Fmc, published January 16, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.18%, the 7th percentile. No source names a fixed version.
References
patchstack.com/database/Wordpress/Plugin/mailclient/vulnerability/wordpress-free-mailclient-fmc-plugin-1-0-csrf-to-stored-xss-vulnerability?_s_id=cve
nvd.nist.gov/vuln/detail/CVE-2025-23703
github.com/advisories/GHSA-gh9p-4cw5-w8fw