CVE-2026-89288 Fast Courier WordPress plugin - SQL Injection

Fast Courier WordPress plugin < 5.2.4 contains a SQL injection caused by unsanitized and unescaped input in an unauthenticated REST route, letting unauthenticated attackers read arbitrary database data.

CVSS base score 8.6 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.21% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
SQL Injection
Impact
Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Published
14 October 2026
Updated
15 October 2026
Weakness
CWE-89

Vendor fix

Upgrade to version 5.2.4 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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