High severity · published May 20, 2026
CVE-2026-5200
AcyMailing <= 10.8.2 - Missing Authorization to Authenticated (Subscriber+) Privilege Escalation via 'acymailing_router'
8.8
CVSS
0.3%
EPSS
No
On KEV
Description
The AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 10.8.2. 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 modify privileged AcyMailing configuration, export subscriber secret keys, and chain these actions into administrator account takeover when a target administrator email address is known.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AA
AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress · acyba
through 10.8.2 · source: vendor
Affected product
AA
AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress
acyba
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-5200
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-5200
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3516422/acymailing
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/f8470662-2247-4159-9dac-f13677c94bdf?source=cve
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