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VulnerabilityPublished Updated

CVE-2026-104736: LearnPress (WordPress plugin) · Deserialization of Untrusted Data

Affects LearnPress (WordPress plugin)Source CVE Database V5

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Not known to be exploited · public detection template (Nuclei) · CVSS 9.8 Critical.

Data as of 3 Nov 2026, 10:57 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
2.5% chance of exploitation in 30 days – higher than 84% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 17 Oct 2026

  2. Weaponized: evidence found.

    Public exploit code: GitHub proofs of concept

  3. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  4. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
thimpressLearnPress – WordPress LMS Plugin for Create and Sell Online CoursesAffected
  • <=4.4.10
Fixed in–

AI-suggested

Until a fix is available, avoid exposing the vulnerable checkout AJAX endpoint or restrict access. Monitor vendor channels for updates.

Description

LearnPress WordPress plugin versions up to 4.4.10 are vulnerable to PHP Object Injection via deserialization of untrusted input from the 'checkout-email' parameter during checkout AJAX requests. The plugin improperly unserializes data without restricting allowed classes, enabling unauthenticated attackers to inject malicious PHP objects. This vulnerability has a critical severity with a CVSS score of 9.8.

References

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