What is CVE-2025-67555?

CVE-2025-67555 is a medium-severity vulnerability in Usestrict Usestrict's Calendly Embedder, classified under Cross-site Scripting. CVSS score: 5.9/10. Published 2025-12-09.

How severe is CVE-2025-67555?

Medium severity. CVSS v3 base score is 5.9 out of 10.

XSS in Usestrict Usestrict's Calendly Embedder

CVE-2025-67555

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in useStrict UseStrict's Calendly Embedder cal-embedder-lite allows Stored XSS.This issue affects UseStrict's Calendly Embedder: from n/a th…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (6.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L.

Affected products

Usestrict Usestrict's Calendly Embedder — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

audit@patchstack.com (vdb-entry)

Frequently asked questions

What is CVE-2025-67555?: CVE-2025-67555 is a medium-severity vulnerability in Usestrict Usestrict's Calendly Embedder, classified under Cross-site Scripting. CVSS score: 5.9/10. Published 2025-12-09.
How severe is CVE-2025-67555?: Medium severity. CVSS v3 base score is 5.9 out of 10.