What is CVE-2025-54677?

CVE-2025-54677 is a critical-severity vulnerability in Vcita Online Booking \& Scheduling Calendar, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.1/10. Published 2025-08-20.

How severe is CVE-2025-54677?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Is CVE-2025-54677 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Arbitrary file upload in Vcita Online Booking \& Scheduling Calendar

CVE-2025-54677

Unrestricted Upload of File with Dangerous Type vulnerability in vcita Online Booking & Scheduling Calendar for WordPress by vcita meeting-scheduler-by-vcita allows Using Malicious Files.This issue affects Online Booking & Scheduling Calendar for WordPress by vcita: from n/a through <= 4.5.3.

Vulnerability class: Unrestricted File Upload

EPSS: 0.004 (35.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

References

audit@patchstack.com (Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2025-54677?: CVE-2025-54677 is a critical-severity vulnerability in Vcita Online Booking \& Scheduling Calendar, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.1/10. Published 2025-08-20.
How severe is CVE-2025-54677?: Critical severity. CVSS v3 base score is 9.1 out of 10.
Is CVE-2025-54677 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.