What is CVE-2026-66464?

CVE-2026-66464 is a medium-severity vulnerability in Toast Plugins Internal Link Optimiser, classified under Missing Authorization. CVSS score: 6.5/10. Published 2026-08-13.

How severe is CVE-2026-66464?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Toast Plugins Internal Link Optimiser

CVE-2026-66464

Unauthenticated Broken Access Control in Internal Link Optimiser <= 5.2.7 versions.

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Toast Plugins Internal Link Optimiser — versions n/a

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

audit@patchstack.com (vdb-entry)

Frequently asked questions

What is CVE-2026-66464?: CVE-2026-66464 is a medium-severity vulnerability in Toast Plugins Internal Link Optimiser, classified under Missing Authorization. CVSS score: 6.5/10. Published 2026-08-13.
How severe is CVE-2026-66464?: Medium severity. CVSS v3 base score is 6.5 out of 10.