CVE-2026-103907 jegtheme CVE debrief

Who should care

Defenders responsible for WordPress installations with the Jeg Kit for Elementor plugin should assess exposure and prioritize verification and remediation efforts. This includes operators, platform administrators, vulnerability management teams, and security teams who need to ensure the plugin is updated to a secure version and monitor for potential exploitation attempts.

Why it matters

The Jeg Kit for Elementor plugin vulnerability allows authenticated attackers to access sensitive information, including user enumeration and potential email address reconstruction, which can be used for further exploitation or phishing attacks.

• Authenticated attackers with Subscriber-level access and above can enumerate every registered user of the site.
• Authenticated attackers can reconstruct arbitrary users' email addresses one character at a time by using the substring search as an oracle.

Technical summary

The Jeg Kit for Elementor plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on both the 'jkit_post_block' and 'jeg_find_author' AJAX actions in versions up to, and including, 3.2.19. The 'wp_ajax_jkit_post_block' handler returns the element's full option schema — including a freshly minted wp_create_nonce('jeg_find_author') — to any authenticated caller, and the 'wp_ajax_jeg_find_author' handler then runs a WP_User_Query with the attacker-supplied 'query' wrapped in '*…*' against search_columns that include user_email, echoing the ID and display_name of every matching user.

Defensive priority

Defenders should prioritize verifying the version of Jeg Kit for Elementor and ensuring that it is updated to a version beyond 3.2.19 if possible, and restrict access to sensitive data.

Recommended defensive actions

• Verify the version of Jeg Kit for Elementor and update to a version beyond 3.2.19 if possible.
• Restrict access to sensitive data.
• Monitor for potential exploitation attempts.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record and source item provide details on the vulnerability, including the affected version and the missing capability check. The vulnerability allows authenticated attackers with Subscriber-level access and above to enumerate every registered user of the site and to reconstruct arbitrary users' email addresses one character at a time by using the substring search as an oracle. There are no explicit details on the number of affected deployments or specific exploitation attempts.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.