Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-89288

CVE-2026-89288HIGH

Unknown Fast Courier — Fast Courier 5.0.0 - 5.2.3 - Unauthenticated SQLi via 'wp_order_id' Parameter

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  C  H  N  N    8.6   .0034   26.5     —

AFFECTED
  Product       Versions  Fixed
  Fast Courier  5.0.0 –   —

TIMELINE
  Sep 11  Reserved by WPScan
  Oct 14  EXPLOIT PUBLISHED — CVE-2026-89288 (Unknown Fast Courier). Public exploit reference added.
  Oct 14  Published (CNA: WPScan)
  Oct 15  EXPLOIT PUBLISHED — CVE-2026-89288 (Unknown Fast Courier). Public exploit reference added.

CWE-89 · CNA: WPScan · CVSS v3.1 · 1 reference · NVD status: Deferred

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.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
September 11, 2026	Reserved	Reserved by WPScan
October 14, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-89288 (Unknown Fast Courier). Public exploit reference added.
October 14, 2026	Published	Published (CNA: WPScan)
October 15, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-89288 (Unknown Fast Courier). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Unknown	Fast Courier	—	5.0.0	—

Weaknesses

CWE-89

References (1)

https://wpscan.com/vulnerability/8b651892-fc8a-4c8b-a04d-5c76b5b85577/

Authoritative record: CVE-2026-89288 at cve.org

Weaknesses: CWE-89

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-89288 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.