CVE-2026-104736 LearnPress WordPress Plugin - PHP Object Injection

LearnPress WordPress plugin <= 4.4.10 contains a PHP Object Injection caused by deserialization of untrusted 'checkout-email' parameter in checkout AJAX action, letting unauthenticated attackers inject PHP objects remotely.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
Proof of concept available
Authentication
Not required
EPSS
0.44% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Insecure Deserialization
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
17 October 2026
Updated
19 October 2026
Weakness
CWE-502

Vendor fix

Update to the latest version beyond 4.4.10.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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