CVE-2026-54858: WordPress Printy theme <= 1.13.0 - PHP Object Injection vulnerability

Critical severity · published Oct 29, 2026

CVE-2026-54858

WordPress Printy theme <= 1.13.0 - PHP Object Injection vulnerability

New

9.8

CVSS

–

EPSS

On KEV

Description

Unauthenticated PHP Object Injection in Printy <= 1.13.0 versions.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Printy · ThemeREX

through 1.13.0 · source: vendor

Affected product

Printy

ThemeREX

All Printy CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-54858

CVE.org

https://www.cve.org/CVERecord?id=CVE-2026-54858

vdb-entry

https://patchstack.com/database/wordpress/theme/printy/vulnerability/wordpress-printy-theme-1-13-0-php-object-injection-vulnerability?_s_id=cve