CVE-2026-18603

MEDIUMCVSS 6.5/10EPSS 0.18%

Last modified

CVE-2026-18603 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
6.5/10

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

EPSS Probability
0.18%

8.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
UnknownPiWeb Cancel order / Refund request for WooCommerce< 1.3.4.34

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is 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.
How severe is CVE-2026-18603?
CVE-2026-18603 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.
How do I fix CVE-2026-18603?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST