CVE-2026-18603

The PiWeb Cancel order / Refund request for WooCommerce WordPress plugin before 1.3.4.34 does not have authorization or ownership checks when adding the contents of a previous order to the cart, allowing unauthenticated users to disclose the contents of other customers' orders, as well as to clear and repopulate a logged in user's cart via a crafted link.

CVSS v3.1

6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS

0.24% chance of exploitation in the next 30 days, 15th percentile

Published

2026-08-09

Updated

2026-08-10

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/544a35ce-c858-4718-ab43-6e945de6f278/

References

• CVE Record
• NVD entry

Related

• CVE-2026-18602
• CVE-2026-18604
• CVE-2026-18601
• CVE-2026-18605
• CVE-2026-18600
• CVE-2026-18606