WordPress Mail Subscribe List Plugin <= 2.1.9 is vulnerable to Cross Site Scripting (XSS)
Priority LOW 29CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
Auth. (contributor+) Stored Cross-Site Scripting (XSS) vulnerability in Richard Leishman t/a Webforward Mail Subscribe List plugin <= 2.1.9 versions.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0037 31st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Richard Leishman t/a Webforward | Mail Subscribe List | up to 2.1.9 | — | No fix listed | CNA |
- Mail Subscribe List VendorRichard Leishman t/a Webforward Affected up to 2.1.9 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-23657
- 2026-10-03 Alias added: GHSA-x33w-9667-c259
References
More Webfwd Mail Subscribe List vulnerabilities
- TI-2013-06169 Mail Subscribe List Plugin index.php cross site scripting CVSS 3.1MEDIUM 6.1
- TI-2022-01473 Mail Subscribe List < 2.1.4 - Arbitrary Subscribed User Deletion via CSRF CVSS 3.1MEDIUM 4.3
Sources
- CVE-2023-23657 · CVE Program
- CVE-2023-23657 · NVD
- FIRST EPSS
- GHSA-x33w-9667-c259 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences