Deserialization of untrusted data in ThimPress LearnPress – Backup & Migration Tool
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- High
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-502.
Summary
The LearnPress – Backup & Migration Tool plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 4.1.4 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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-7566
- 2026-10-03 Alias added: GHSA-4jj4-xwhh-x5m2
- 2026-10-25 EPSS moved to the below the 50th percentile
References
Other 8
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2f796373-7116-4fd3-9d53-5f520e6e1a0c?source=cve
- https://plugins.trac.wordpress.org/browser/learnpress-import-export/trunk/inc/admin/providers/learnpress/class-lp-import-learnpress.php#L581
- https://plugins.trac.wordpress.org/browser/learnpress-import-export/tags/4.1.4/inc/admin/providers/learnpress/class-lp-import-learnpress.php#L581
- https://plugins.trac.wordpress.org/browser/learnpress-import-export/trunk/inc/parsers.php#L871
- https://plugins.trac.wordpress.org/browser/learnpress-import-export/tags/4.1.4/inc/parsers.php#L871
- https://plugins.trac.wordpress.org/browser/learnpress-import-export/tags/4.1.1/inc/admin/providers/learnpress/class-lp-import-learnpress.php#L581
- https://plugins.trac.wordpress.org/browser/learnpress-import-export/tags/4.1.1/inc/parsers.php#L871
- https://plugins.trac.wordpress.org/browser/learnpress-import-export/tags/4.1.5/inc/functions.php#L384
More ThimPress vulnerabilities
- TI-2024-07900 LearnPress – WordPress LMS Plugin <= 4.2.7 - Unauthenticated SQL Injection via 'c_only_fields' CVSS 3.1CRITICAL 10.0
- TI-2023-06018 LearnPress <= 4.2.5.7 - Unauthenticated SQL Injection via order_by CVSS 3.1CRITICAL 9.8
- TI-2023-05199 WP Hotel Booking < 2.0.8 - Unauthenticated SQLi CVSS 3.1CRITICAL 9.8
- TI-2024-04124 LearnPress – WordPress LMS Plugin <= 4.2.6.5 - Unauthenticated Time-Based SQL Injection CVSS 3.1CRITICAL 9.8
- TI-2023-18355 WordPress LearnPress plugin <= 4.2.3 - Authenticated Broken Access Control vulnerability CVSS 3.1HIGH 8.8
- TI-2022-03105 LearnPress < 4.1.7.2 - Unauthenticated PHP Object Injection via REST API CVSS 3.1HIGH 8.1
Sources
- CVE-2026-7566 · CVE Program
- CVE-2026-7566 · NVD
- FIRST EPSS
- GHSA-4jj4-xwhh-x5m2 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences