EUVD-2026-21257
GHSA-hqrg-cfxf-rjg9
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Lifecycle Timeline
3Description
The Tutor LMS - eLearning and online course solution plugin for WordPress is vulnerable to an Insecure Direct Object Reference in all versions up to, and including, 3.9.7. This is due to missing authentication and authorization checks in the `pay_incomplete_order()` function. The function accepts an attacker-controlled `order_id` parameter and uses it to look up order data, then writes billing fields to the order owner's profile (`$order_data->user_id`) without verifying the requester's identity or ownership. Because the Tutor nonce (`_tutor_nonce`) is exposed on public frontend pages, this makes it possible for unauthenticated attackers to overwrite the billing profile (name, email, phone, address) of any user who has an incomplete manual order, by sending a crafted POST request with a guessed or enumerated `order_id`.
Analysis
Unauthenticated attackers can overwrite billing profile data (name, email, phone, address) for any WordPress user with an incomplete manual order in Tutor LMS plugin versions ≤3.9.7. The pay_incomplete_order() function accepts attacker-controlled order_id parameters without identity verification, writing billing fields directly to the order owner's profile. …
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Remediation
Within 24 hours: Verify Tutor LMS version across all WordPress installations (use admin dashboard Plugins page or WP-CLI: wp plugin list --field=name,version). Within 7 days: Monitor for patch release from Tutor LMS; implement WordPress security plugin (e.g., Wordfence) with rule-based POST request filtering to block pay_incomplete_order() submissions from unauthenticated sources. …
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External POC / Exploit Code
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