Medium severity · published May 21, 2026
CVE-2026-1543
Avada (Fusion) Builder <= 3.15.2 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Multiple Shortcodes
6.4
CVSS
0.3%
EPSS
No
On KEV
Description
The Avada (Fusion) Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple shortcodes in all versions up to, and including, 3.15.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user (typically an administrator) accesses a page displaying dynamic user data (such as via the Dynamic Data feature pulling user biographical information).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
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
AF
Avada (Fusion) Builder · themefusion
through 3.15.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-1543
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-1543
avada.com
https://avada.com/documentation/avada-changelog/
themeforest.net
https://themeforest.net/item/avada-responsive-multipurpose-theme/2833226
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/72a6b040-ed02-4561-82f2-4adb820bdf7d?source=cve
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