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Vulnerabilities

Vulnerability · CVE-2026-104734

Kirki <= 6.3.2 - Authenticated (Administrator+) PHP Object Injection via Deserialization of Untrusted Input via ZIP Template Import

Published Oct 16, 2026 · catalog updated Oct 18, 2026 · Kirki – Freeform Page Builder, Website Builder & Customizer

Check if you run it

No confirmed exploitation is on record for CVE-2026-104734. EPSS is 0.47%. Act only if a listed version of Kirki – Freeform Page Builder, Website Builder & Customizer is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.47%
Remediation
Version ranges on file
Affected products
stated Kirki – Freeform Page Builder, Website Builder & Customizer · vendor themeum Kirki – Freeform Page Builder, Website Builder & Customizer · wordpress kirki

The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 6.3.2 via deserialization of untrusted input . This makes it possible for authenticated attackers, with administrator-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present. By default, Editor-level users are granted FULL_ACCESS to the plugin's import endpoint via the KIRKI_USERS_DEFAULT_FULL_ACCESS configuration, meaning exploitation is possible at Editor privilege level rather than being restricted to administrators alone.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • stated Kirki – Freeform Page Builder, Website Builder & Customizer<= 6.3.2
  • vendor themeum Kirki – Freeform Page Builder, Website Builder & Customizerversion unspecified
  • wordpress kirkiversion unspecified

How to fix CVE-2026-104734

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-104734. EPSS is 0.47%. Act only if a listed version of Kirki – Freeform Page Builder, Website Builder & Customizer is installed.

Which versions are affected?

Compare what you have installed with Kirki – Freeform Page Builder, Website Builder & Customizer <= 6.3.2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-502: Deserialization of Untrusted Data. EPSS 0.47%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 16, 2026 · Wordfence Intelligence

    Detected

    The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 6.3.2 via deserialization of untrusted input . This makes it possible for authenticated attackers, with administrator-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software, which means thi

  2. Oct 17, 2026 · CVE.org

    Updated

    The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 6.3.2 via deserialization of untrusted input . This makes it possible for authenticated attackers, with administrator-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software, which means thi

  3. Oct 18, 2026 · NIST NVD

    Updated

    The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 6.3.2 via deserialization of untrusted input . This makes it possible for authenticated attackers, with administrator-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software, which means thi

Sources

  • CVE.orgVulnerability recordCVE-2026-104734

    The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 6.3.2 via deserialization of untrusted input . This makes it possible for authenticated attackers, with administrator-l

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-104734

    30-day exploitation probability 0.5%

    first.org
  • NIST NVDVulnerability recordCVE-2026-104734

    The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 6.3.2 via deserialization of untrusted input . This makes it possible for authenticated attackers, with administrator-l

    nvd.nist.gov
  • Wordfence IntelligencePackage advisoryCVE-2026-104734

    The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 6.3.2 via deserialization of untrusted input . This makes it possible for authenticated attackers, with administrator-l

    wordfence.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.