CVE-2026-18603 — MEDIUM (6.5)

Vulnerability Description

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 Score

6.5

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Related Weaknesses (CWE)

CWE-862

References

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

FAQ

What is CVE-2026-18603?

CVE-2026-18603 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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, allow...

How severe is CVE-2026-18603?

CVE-2026-18603 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-18603?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.