Improper privilege management in acyba AcyMailing – An Ultimate Newsletter Plugin and…
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Privilege escalation
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-269.
Summary
The AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 10.11.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to overwrite the BCC field of the acy_notification_cms notification template, causing subsequent WordPress password-reset emails — including those targeting administrator accounts — to be silently copied to an attacker-controlled address, enabling account takeover via the captured reset link. Successful exploitation requires the site administrator to have enabled the "Send website emails with AcyMailing" option, which routes WordPress core notification emails through AcyMailing's templating system.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
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 |
|---|---|---|---|---|---|
| acyba | AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress | up to 10.11.1 | — | No fix listed | CNA |
- AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress Vendoracyba Affected up to 10.11.1 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-15426
- 2026-10-03 Alias added: GHSA-pw82-xvrp-3rqp
- 2026-10-09 EPSS moved to the 50th–90th percentile
References
Other 7
- https://www.wordfence.com/threat-intel/vulnerabilities/id/0c187d78-9f1d-4e55-a611-755ee30f855b?source=cve
- https://plugins.trac.wordpress.org/browser/acymailing/tags/10.10.2/back/Controllers/Mails/Edition.php#L344
- https://plugins.trac.wordpress.org/browser/acymailing/tags/10.10.2/back/Controllers/Dashboard/Walkthrough.php#L222
- https://plugins.trac.wordpress.org/browser/acymailing/tags/10.10.2/back/Core/AcymController.php#L99
- https://plugins.trac.wordpress.org/browser/acymailing/tags/10.10.2/back/WpInit/Router.php#L122
- https://plugins.trac.wordpress.org/browser/acymailing/tags/10.10.2/back/Classes/MailClass.php#L1496
- https://plugins.trac.wordpress.org/changeset/3632690/acymailing
More acyba vulnerabilities
- TI-2023-20863 Extension - acymailing.com - RCE in AcyMailing component for Joomla 6.7.0-8.5.0 CVSS 3.1CRITICAL 9.8
- TI-2018-06612 CSV Injection (aka Excel Macro Injection or Formula Injection) exists in the export… CVSS 3.0HIGH 8.8
- TI-2018-06611 CSV Injection (aka Excel Macro Injection or Formula Injection) exists in the export… CVSS 3.0HIGH 8.8
- TI-2024-06844 AcyMailing <= 9.7.2 - Authenticated (Subscriber+) Arbitrary File Upload via acym_extractArchive Function CVSS 3.1HIGH 8.8
- TI-2026-54189 Path traversal in acyba AcyMailing – An Ultimate Newsletter Plugin and Marketing… CVSS 3.1HIGH 7.5
- TI-2026-04543 AcyMailing <= 10.8.2 - Missing Authorization to Authenticated (Subscriber+) Privilege Escalation via 'acymailing_router' CVSS 3.1HIGH 8.8
Sources
- CVE-2026-15426 · CVE Program
- CVE-2026-15426 · NVD
- FIRST EPSS
- GHSA-pw82-xvrp-3rqp · 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