Medium severity · published Oct 29, 2025
CVE-2025-11587
Call Now Button <= 1.5.3 - Missing Authorization to Authenticated (Subscriber+) Limited Plugin Settings Update
4.3
CVSS
0.2%
EPSS
No
On KEV
Description
The Call Now Button – The #1 Click to Call Button for WordPress plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the activate function in all versions up to, and including, 1.5.3. This makes it possible for authenticated attackers, with Subscriber-level access and above, to link the plugin to their nowbuttons.com account and add malicious buttons to the site. The vulnerability is only exploitable on fresh installs where the plugin has not been previously configured with an API key.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CN
Call Now Button – The #1 Click to Call Button for WordPress · jgrietveld
through 1.5.3 · source: vendor
Affected product
CN
Call Now Button – The #1 Click to Call Button for WordPress
jgrietveld
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-11587
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-11587
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/call-now-button/tags/1.5.3/src/admin/api-key/class-ott-controller.php#L27
research.cleantalk.org
https://research.cleantalk.org/cve-2025-11587/
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/d77b127e-52ee-4256-9450-410413b273f6?source=cve
More from Call Now Button – The #1 Click to Call Button for WordPress
4.3
CVE-2025-11632
Call Now Button <= 1.5.4 - Authenticated (Subscriber+) Missing Authorization to Multiple Functions