CVE-2026-78572: CWE-502 Deserialization of Untrusted Data in Kalles Addons
The Kalles Addons plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.0.6 via deserialization of untrusted input. This makes it possible for unauthenticated attackers 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.
AI Analysis
Technical Summary
CVE-2026-78572 describes a PHP Object Injection vulnerability in the Kalles Addons WordPress plugin affecting all versions up to 1.0.6. The vulnerability arises from unsafe deserialization of untrusted data, classified under CWE-502. Exploitation requires a gadget chain (POP chain) present in another installed plugin or theme. Without such a chain, the vulnerability cannot be leveraged to cause harm. If a POP chain is present, attackers could perform actions including arbitrary file deletion, sensitive data retrieval, or code execution depending on the chain's capabilities. No official remediation or patch is currently documented.
Potential Impact
The vulnerability allows unauthenticated attackers to inject PHP objects via deserialization. However, exploitation depends on the presence of a gadget chain in other installed components. If such a chain exists, the impact can be severe, including full compromise through code execution, data theft, or file deletion. Without a gadget chain, the vulnerability has no practical impact.
Mitigation Recommendations
No official patch or remediation is currently confirmed. Since exploitation requires a gadget chain in other plugins or themes, review and update all installed plugins and themes to versions without known POP chains. Monitor vendor advisories for Kalles Addons for future patches. Consider disabling or removing the Kalles Addons plugin if not essential until a fix is available.
CVE-2026-78572: CWE-502 Deserialization of Untrusted Data in Kalles Addons
Description
The Kalles Addons plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.0.6 via deserialization of untrusted input. This makes it possible for unauthenticated attackers 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.
CVSS v3.1
Score 8.1high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-78572 describes a PHP Object Injection vulnerability in the Kalles Addons WordPress plugin affecting all versions up to 1.0.6. The vulnerability arises from unsafe deserialization of untrusted data, classified under CWE-502. Exploitation requires a gadget chain (POP chain) present in another installed plugin or theme. Without such a chain, the vulnerability cannot be leveraged to cause harm. If a POP chain is present, attackers could perform actions including arbitrary file deletion, sensitive data retrieval, or code execution depending on the chain's capabilities. No official remediation or patch is currently documented.
Potential Impact
The vulnerability allows unauthenticated attackers to inject PHP objects via deserialization. However, exploitation depends on the presence of a gadget chain in other installed components. If such a chain exists, the impact can be severe, including full compromise through code execution, data theft, or file deletion. Without a gadget chain, the vulnerability has no practical impact.
Mitigation Recommendations
No official patch or remediation is currently confirmed. Since exploitation requires a gadget chain in other plugins or themes, review and update all installed plugins and themes to versions without known POP chains. Monitor vendor advisories for Kalles Addons for future patches. Consider disabling or removing the Kalles Addons plugin if not essential until a fix is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-08-24T20:33:02.807Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a8d6265acd9273b49fc7d17
Added to database: 08/25/2026, 09:37:41 UTC
Last enriched: 08/25/2026, 09:52:08 UTC
Last updated: 08/25/2026, 11:11:55 UTC
Views: 7
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