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High severity · published Mar 5, 2026
CVE-2026-27369
WordPress Celeste theme <= 1.3.6 - PHP Object Injection vulnerability
8.1
CVSS
0.3%
EPSS
No
On KEV
Description
Deserialization of Untrusted Data vulnerability in BoldThemes Celeste celeste allows Object Injection.This issue affects Celeste: from n/a through <= 1.3.6.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 26% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CE
Celeste · BoldThemes
through 1.3.6 · source: vendor
Affected product
CE
Celeste
BoldThemes
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-27369
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-27369
patchstack.com
https://patchstack.com/database/Wordpress/Theme/celeste/vulnerability/wordpress-celeste-theme-1-3-6-php-object-injection-vulnerability?_s_id=cve