CVE-2026-79324

The Address Delete controller in Mageplaza's GDPR extension for Magento 2 (mageplaza/module-gdpr) through version 4.2.9 lacks an authorization check: it extends Magento's legacy Action class rather than AbstractAccount, so requests are not required to be authenticated, to belong to the address owner, or to carry a valid form key. An unauthenticated remote attacker can delete any customer's saved address by sending a GET request to /customer/address/delete/id/{id} with an arbitrary address ID. By iterating address IDs, the attacker can erase every stored customer address on the affected store; the impact is to data integrity only (CVSS C:N/I:H/A:N), with no data exposure or code execution. Any Magento 2 store running the affected Mageplaza GDPR module is exposed, with impact concentrated in loss of saved customer address records rather than site takeover. No public proof-of-concept, in-the-wild exploitation, or CISA KEV listing is currently known.

What to do: Check the installed mageplaza/module-gdpr version and upgrade to a release newer than 4.2.9 as soon as Mageplaza publishes a patched version. As an interim mitigation, block or require authentication for GET requests to /customer/address/delete/id/ at the web server or WAF level, and review access logs for unauthenticated hits to that endpoint to detect any address deletion already performed.