CVE-2025-4803: CWE-502 Deserialization of Untrusted Data in steinrein Glossary by WPPedia – Best Glossary plugin for WordPress
The Glossary by WPPedia – Best Glossary plugin for WordPress plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.3.0 via deserialization of untrusted input from the 'posttypes' parameter. 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.
AI Analysis
Technical Summary
CVE-2025-4803 is a PHP Object Injection vulnerability in the Glossary by WPPedia – Best Glossary plugin for WordPress, affecting all versions up to 1.3.0. It arises from unsafe deserialization of the 'posttypes' parameter, allowing authenticated users with Administrator privileges to inject PHP objects. However, the plugin alone does not contain a gadget POP chain to exploit this injection. Successful exploitation requires another plugin or theme installed on the WordPress site to provide a POP chain, which could then enable actions such as arbitrary file deletion, sensitive data disclosure, or remote code execution depending on the chain's capabilities.
Potential Impact
If exploited in an environment where a suitable POP chain exists in other installed plugins or themes, an attacker with Administrator access could execute arbitrary code, delete files, or access sensitive information. Without such a POP chain, the vulnerability does not lead to impact. The vulnerability requires high privileges (Administrator or above) and does not affect unauthenticated users.
Mitigation Recommendations
No patch or official fix is currently available for this vulnerability. Since exploitation requires a POP chain from other installed plugins or themes, review and limit installed plugins/themes to trusted sources. Restrict Administrator access to trusted users only. Monitor vendor advisories for updates or patches addressing this issue. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
CVE-2025-4803: CWE-502 Deserialization of Untrusted Data in steinrein Glossary by WPPedia – Best Glossary plugin for WordPress
Description
The Glossary by WPPedia – Best Glossary plugin for WordPress plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.3.0 via deserialization of untrusted input from the 'posttypes' parameter. 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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-4803 is a PHP Object Injection vulnerability in the Glossary by WPPedia – Best Glossary plugin for WordPress, affecting all versions up to 1.3.0. It arises from unsafe deserialization of the 'posttypes' parameter, allowing authenticated users with Administrator privileges to inject PHP objects. However, the plugin alone does not contain a gadget POP chain to exploit this injection. Successful exploitation requires another plugin or theme installed on the WordPress site to provide a POP chain, which could then enable actions such as arbitrary file deletion, sensitive data disclosure, or remote code execution depending on the chain's capabilities.
Potential Impact
If exploited in an environment where a suitable POP chain exists in other installed plugins or themes, an attacker with Administrator access could execute arbitrary code, delete files, or access sensitive information. Without such a POP chain, the vulnerability does not lead to impact. The vulnerability requires high privileges (Administrator or above) and does not affect unauthenticated users.
Mitigation Recommendations
No patch or official fix is currently available for this vulnerability. Since exploitation requires a POP chain from other installed plugins or themes, review and limit installed plugins/themes to trusted sources. Restrict Administrator access to trusted users only. Monitor vendor advisories for updates or patches addressing this issue. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- Wordfence
- Date Reserved
- 2025-05-15T23:37:06.569Z
- Cisa Enriched
- false
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 682d9f07c4522896dcbf9952
Added to database: 5/21/2025, 9:38:15 AM
Last enriched: 4/9/2026, 5:30:19 PM
Last updated: 5/10/2026, 4:41:37 AM
Views: 69
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