CVE-2026-89288
High
Description
The Fast Courier WordPress plugin before 5.2.4 does not sanitize and escape a value before using it in a SQL query on an unauthenticated REST route, allowing unauthenticated attackers to perform SQL injection and read arbitrary data from the database.
SeverityHigh
CVSS8.6
Exploit probability—
ProductFast Courier
PublishedOct 14, 2026
First seenOct 14, 2026
Weakness typeCWE-89SQL injection
How to fix
Update
- Fast Courier5.2.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Fast Courier | 5.0.0 ≤ v < 5.2.4 | 5.2.4 |
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