Medium severity · published Oct 8, 2026
CVE-2026-105886
WordPress Ultimate Post Kit plugin <= 4.5.5 - Broken Access Control vulnerability
6.5
CVSS
0.2%
EPSS
No
On KEV
Description
Missing Authorization vulnerability in BdThemes Ultimate Post Kit ultimate-post-kit allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Ultimate Post Kit: from n/a through 4.5.5.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 16% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UP
Ultimate Post Kit · BdThemes
through 4.5.5 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-105886
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-105886
vdb-entry
https://patchstack.com/database/wordpress/plugin/ultimate-post-kit/vulnerability/wordpress-ultimate-post-kit-plugin-4-5-5-broken-access-control-vulnerability?_s_id=cve
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6.4
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