Medium severity · published Aug 24, 2026
CVE-2026-78278
WordPress Fluent Boards Pro plugin <= 2.0.11 - Insecure Direct Object References (IDOR) vulnerability
5.3
CVSS
0.3%
EPSS
No
On KEV
Description
Subscriber Insecure Direct Object References (IDOR) in Fluent Boards Pro <= 2.0.11 versions.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FB
Fluent Boards Pro · WP ManageNinja LLC
through 2.0.11 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-78278
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-78278
patchstack.com
https://patchstack.com/database/wordpress/plugin/fluent-boards-pro/vulnerability/wordpress-fluent-boards-pro-plugin-2-0-11-insecure-direct-object-references-idor-vulnerability?_s_id=cve