Newsletter - API v1 and v2 addon for Newsletter <= 2.4.5 - Missing Authorization to Email Subscribers Management
Priority LOW 29CWE-862Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- 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-862.
Summary
The Newsletter - API v1 and v2 addon plugin for WordPress is vulnerable to unauthorized subscribers management due to PHP type juggling issue on the check_api_key function in all versions up to, and including, 2.4.5. This makes it possible for unauthenticated attackers to list, create or delete newsletter subscribers. This issue affects only sites running the PHP version below 8.0
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00317 24th 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 |
|---|---|---|---|---|---|
| The Newsletter Team | Newsletter - API v1 and v2 addon for Newsletter | up to 2.4.5 | — | No fix listed | CNA |
- Newsletter - API v1 and v2 addon for Newsletter VendorThe Newsletter Team Affected up to 2.4.5 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:newsletter:newsletter:*:*:*:*:*:wordpress:*:* | before 2.4.6 | Vulnerable | Newsletter |
- cpe:2.3:a:newsletter:newsletter:*:*:*:*:*:wordpress:*:* Versions before 2.4.6 Vulnerable ·Newsletter
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2024-5674
- 2026-10-03 Alias added: GHSA-8xmg-v9fm-xcgv
References
Sources
- CVE-2024-5674 · CVE Program
- CVE-2024-5674 · NVD
- FIRST EPSS
- GHSA-8xmg-v9fm-xcgv · 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