Newsletter <= 6.5.3 — CSV Injection
e91e6101-bd30-4cf1-9a39-23218c3bff6fPublished · Updated Action summary
Affected: ≤6.5.3Update to 6.5.4 or newer
All remediation steps- Severity
- Medium5.5
- CVSS
- 5.5CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:LWhat does this vector mean?
AV:NAttack vector- Network
AC:HAttack complexity- High
PR:LPrivileges required- Low
UI:RUser interaction- Required
S:CScope- Changed
C:LConfidentiality- Low
I:LIntegrity- Low
A:LAvailability- Low
- Weakness
- CWE-20 Improper Input Validation
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Newsletter – Send awesome emails from WordPress newsletter
- Affected≤ 6.5.3
- Patched in6.5.4
Update to 6.5.4 or newer.
You are affected if you run ≤ 6.5.3. Version 6.5.4 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Newsletter – Send awesome emails from WordPress.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 6.5.4, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Newsletter – Send awesome emails from WordPress to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Vishnupriya Ilango.
The Newsletter plugin for WordPress is vulnerable to CSV Injection in versions up to, and including, 6.5.3 by the use of Microsoft Excel DDE function, or to leak data via maliciously injected hyperlinks. This allows non-privileged attackers to embed untrusted input into exported CSV files, which can result in code execution when these files are downloaded and opened on a local system with a vulnerable configuration.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Newsletter – Send awesome emails from WordPress
All 24| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via 'np1' Custom Field Parameter ≤9.4.0Update to 9.4.1 | CVE-2026-96566 | |
| Medium5.3 | Unauthenticated Insufficiently Protected Credentials via '/tnp/l/' Click-Tracking REST Endpoint (Raw Subscriber Token Cookie Disclosure) ≤9.3.9Update to 9.4.0 | CVE-2026-92537 | |
| Medium6.1 | Reflected Cross-Site Scripting via 'nn' Parameter ≤9.3.8Update to 9.3.9 | CVE-2026-90981 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤9.3.3Update to 9.3.4 | CVE-2026-66596 | |
| Medium4.3 | Cross-Site Request Forgery to Newsletter Unsubscription ≤9.1.0Update to 9.1.1 | CVE-2026-1051 |
- High7.2Unauthenticated Stored Cross-Site Scripting via 'np1' Custom Field Parameter
≤9.4.0Update to 9.4.1
- Medium5.3Unauthenticated Insufficiently Protected Credentials via '/tnp/l/' Click-Tracking REST Endpoint (Raw Subscriber Token Cookie Disclosure)
≤9.3.9Update to 9.4.0
- Medium6.1Reflected Cross-Site Scripting via 'nn' Parameter
≤9.3.8Update to 9.3.9
- High7.2Unauthenticated Stored Cross-Site Scripting
≤9.3.3Update to 9.3.4
- Medium4.3Cross-Site Request Forgery to Newsletter Unsubscription
≤9.1.0Update to 9.1.1
Timeline
CVE published
Severity medium, CVSS 5.5
Record last updated
Sources & licenses
- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.