How severe is CVE-2025-54677?

CVE-2025-54677 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-54677 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-54677?

CVE-2025-54677 affects Vcita Online Booking & Scheduling Calendar. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-54677?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-54677 have an EU (EUVD) identifier?

Yes. CVE-2025-54677 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-28563.

When was CVE-2025-54677 published?

CVE-2025-54677 was published on 2025-08-20 and last updated on 2026-06-17.

CVE-2025-54677

CVE-2025-54677 is a critical-severity vulnerability in Vcita Online Booking & Scheduling Calendar with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-28563
Weakness: CWE-434
Affected product: Vcita Online Booking & Scheduling Calendar
Published: 2025-08-20
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2025-54677?: CVE-2025-54677 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-54677 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-54677?: CVE-2025-54677 affects Vcita Online Booking & Scheduling Calendar. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-54677?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-54677 have an EU (EUVD) identifier?: Yes. CVE-2025-54677 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-28563.
When was CVE-2025-54677 published?: CVE-2025-54677 was published on 2025-08-20 and last updated on 2026-06-17.

References

https://patchstack.com/database/Wordpress/Plugin/meeting-scheduler-by-vcita/vulnerability/wordpress-online-booking-scheduling-calendar-for-wordpress-by-vcita-plugin-4-5-3-arbitrary-file-upload-vulnerability?_s_id=cve

Affected products (1)

cpe:2.3:a:vcita:online_booking_\&_scheduling_calendar:*:*:*:*:*:wordpress:*:*

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