What is CVE-2026-81420?

CVE-2026-81420 is a high-severity vulnerability in Tcard Wp, classified under SQL Injection. CVSS score: 8.6/10. Published 2026-10-11.

How severe is CVE-2026-81420?

High severity. CVSS v3 base score is 8.6 out of 10.

SQL Injection in Tcard Wp

CVE-2026-81420

The Tcard WP WordPress plugin through 1.8.0 does not sanitise and escape a parameter before using it in a SQL statement in one of its unauthenticated AJAX actions, allowing unauthenticated users to perform SQL injection attacks.

Vulnerability class: SQL Injection

Published 2026-10-11 · last modified 2026-10-11.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Tcard Wp

Weakness classification (CWE)

CWE-89 — SQL Injection

References

wpscan.com/vulnerability/cedd2a79-a718-4398-8df4-786b3b585090/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-81420?: CVE-2026-81420 is a high-severity vulnerability in Tcard Wp, classified under SQL Injection. CVSS score: 8.6/10. Published 2026-10-11.
How severe is CVE-2026-81420?: High severity. CVSS v3 base score is 8.6 out of 10.