Mailgun for WordPress < 2.2.1 - Unauthenticated Arbitrary Mailgun List Subscription via add_list AJAX
Priority HIGH 68CWE-284Published · 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
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-284.
Summary
The Mailgun for WordPress plugin before 2.2.1 does not perform any capability or nonce check on an unauthenticated AJAX action that adds subscribers to the site owner's configured email service mailing lists, allowing unauthenticated attackers to enrol arbitrary email addresses into those lists using the owner's stored API credentials.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00275 20th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Mailgun for WordPress (Unknown): 2.2.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- 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 |
|---|---|---|---|---|---|
| Unknown | Mailgun for WordPress | before 2.2.1 | 2.2.1 | Patch available | CNA |
- Mailgun for WordPress VendorUnknown Affected before 2.2.1 Fixed in 2.2.1 Patch available CNA
Remediation
- Fix · CNA Mailgun for WordPress (Unknown) Fixed in 2.2.1
Timeline
- 2026-10-02 Threatist record created from CVE-2026-14834
- 2026-10-03 Alias added: GHSA-xgf9-46hc-5c98
References
Sources
- CVE-2026-14834 · CVE Program
- CVE-2026-14834 · NVD
- FIRST EPSS
- GHSA-xgf9-46hc-5c98 · 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