PatchTheCVECVE-2025-3889: The WordPress Simple Shopping Cart plugin for WordPress is vulnerable to Insecure Direct Object Reference in a
CVE-2025-3889 is a medium-severity flaw (CVSS 5.3) affecting wordpress simple paypal shopping cart. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The WordPress Simple Shopping Cart plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 5.1.3 via the 'process_payment_data' due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to change the quantity of a product to a negative number, which subtracts the product cost from the total order cost. The attack will only work with Manual Checkout
Why this priority
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.3 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.4% (top 70%) |
| CISA exploited list | No |
| Weakness | CWE-639 |
| Published | 2025-05-01 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2025-3889?
wordpress simple paypal shopping cart: upgrade to 5.1.4. Exact commands for each OS are on this page.
Is CVE-2025-3889 being exploited?
CVE-2025-3889 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2025-3889 affect?
CVE-2025-3889 affects wordpress simple paypal shopping cart. Severity is medium (CVSS 5.3). The WordPress Simple Shopping Cart plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 5.1.3 via the 'process_payment_data' due to missing validation on a user controlled key. This ma
How urgent is CVE-2025-3889?
Priority 31/100. Remotely exploitable, no login, no user action
Software pages
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