SMTP for Sendinblue – YaySMTP <= 1.2 - Unauthenticated Stored Cross-Site Scripting via Email Logs
Priority LOW 38CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The SMTP for Sendinblue – YaySMTP plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 1.2 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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00359 29th 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
- Yes
- 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 |
|---|---|---|---|---|---|
| YayCommerce | SMTP for Sendinblue – YaySMTP | up to 1.2 | — | No fix listed | CNA |
- SMTP for Sendinblue – YaySMTP VendorYayCommerce Affected up to 1.2 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:yaycommerce:yaysmtp:*:*:*:*:*:wordpress:*:* | before 1.2 | Vulnerable | YayCommerce |
- cpe:2.3:a:yaycommerce:yaysmtp:*:*:*:*:*:wordpress:*:* Versions before 1.2 Vulnerable ·YayCommerce
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-0953
- 2026-10-03 Alias added: GHSA-4429-qgp7-2cwq
References
More YayCommerce Yaysmtp vulnerabilities
- TI-2025-00781 SMTP for SendGrid – YaySMTP <= 1.4 - Unauthenticated Stored Cross-Site Scripting via Email Logs CVSS 3.1HIGH 7.2
- TI-2025-00779 YaySMTP 2.4.9 - 2.6.2 - Unauthenticated Stored Cross-Site Scripting CVSS 3.1HIGH 7.2
- TI-2023-02899 YaySMTP <= 2.4.5 - Unauthenticated Stored Cross-Site Scripting via Email CVSS 3.1HIGH 7.2
- TI-2022-02186 YaySMTP < 2.2.1 - Subscriber+ SMTP Credentials Leak CVSS 3.1MEDIUM 6.5
- TI-2022-02187 YaySMTP < 2.2.1 - Subscriber+ Stored Cross-Site Scripting CVSS 3.1MEDIUM 5.4
- TI-2022-02188 YaySMTP < 2.2.2 - Admin+ Stored Cross-Site Scripting CVSS 3.1MEDIUM 4.8
Sources
- CVE-2025-0953 · CVE Program
- CVE-2025-0953 · NVD
- FIRST EPSS
- GHSA-4429-qgp7-2cwq · 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