Skip to content
Noroxi
NVD / CVE Program· CNA Patchstack

CVE-2025-54676: WordPress Online Booking & Scheduling Calendar for by vcita Plugin plugin <= 4.5.3 - Cross Site Scripting (XSS) Vulnerability

MediumCVSS 5.4 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 21/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.24% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: vcita Online Booking & Scheduling Calendar for WordPress by vcita 4.5.5.

Low priority for now. Upgrade to vcita Online Booking & Scheduling Calendar for WordPress by vcita 4.5.5 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in vcita Online Booking & Scheduling Calendar for WordPress by vcita meeting-scheduler-by-vcita allows Stored XSS.This issue affects Online Booking & Scheduling Calendar for WordPress by vcita: from n/a through <= 4.5.3.

Published
Aug 14, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 15th percentile

Report tools

JSON

Action score

21

Monitor

Low priority for now.

CVSS
21 / 40 · 5.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
5.4
CNA · Patchstack
6.5
1.1 point gap

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Is Online Booking & Scheduling Calendar by vcita on your site?

WP Lens reads your site's plugin, theme and WordPress versions from the outside and matches them to known vulnerabilities. Works without an account.

Follow CVE-2025-54676

Is Online Booking & Scheduling Calendar by vcita on your site?

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits every 10 minutes on paid plans, on the hour on the free plan.

Your free account also gets you

  • CVE alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools, at most 30 a day (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for vcita records
If any of these changes, we'll tell you in the daily email digest.
Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
vcitaonline booking \& scheduling calendar

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Patchstack). Independent of NVD's CPE analysis and usually ahead of it.

  • vcita Online Booking & Scheduling Calendar for WordPress by vcita

    • up to and including 4.5.3affectedfixed in 4.5.5

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • vcita online booking & scheduling calendarbefore 4.5.5

Same product

vcita: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-54677WordPress Online Booking & Scheduling Calendar for WordPress by vcita Plugin <= 4.5.3 - Arbitrary File Upload Vulnerability
    28Monitor
  • CVE-2024-37499WordPress Online Booking & Scheduling Calendar for WordPress plugin <= 4.4.2 - Local File Inclusion vulnerability
    26Monitor
  • CVE-2023-2416Online Booking & Scheduling Calendar for WordPress by vcita <= 4.5 - Cross-Site Request Forgery to Account Logout
    26Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2024-9872Dec 6, 2024 · Online Booking & Scheduling Calendar for WordPress by vcita <= 4.5.1 - Authenticated (Subscriber+) Stored Cross-Site Scripting
    21Monitor
  • ← EarlierCVE-2024-54356Dec 16, 2024 · WordPress Online Booking & Scheduling Calendar for WordPress by vcita plugin <= 4.5 - Cross Site Request Forgery (CSRF) vulnerability
    21Monitor
  • ← EarlierCVE-2025-32238Apr 4, 2025 · WordPress Online Booking & Scheduling Calendar for WordPress by vcita plugin <= 4.5.5 - Sensitive Data Exposure vulnerability
    17Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
vcita Online Booking & Scheduling Calendar for WordPress by vcita4.5.5Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2024-47638313 days apartWordPress Online Booking & Scheduling Calendar for WordPress plugin <= 4.4.6 - Reflected Cross Site Scripting (XSS) vulnerability
    24Monitor
  • CVE-2024-37262388 days apartWordPress Online Booking & Scheduling Calendar plugin <= 4.4.2 - Reflected Cross Site Scripting (XSS) vulnerability
    24Monitor
  • CVE-2024-5791419 days apartAppointment Booking and Online Scheduling <= 4.4.2 - Missing Authorization to Unauthenticated Stored Cross-Site Scripting
    24Monitor
  • CVE-2024-5859419 days apartAppointment Booking and Online Scheduling <= 4.4.2 - Reflected Cross-Site Scripting
    24Monitor
  • CVE-2024-9872251 days apartOnline Booking & Scheduling Calendar for WordPress by vcita <= 4.5.1 - Authenticated (Subscriber+) Stored Cross-Site Scripting
    21Monitor
  • CVE-2024-35761419 days apartWordPress Online Booking & Scheduling Calendar for WordPress by vcita plugin <= 4.4.0 - Cross Site Scripting (XSS) vulnerability
    21Monitor

Not on record for this CVE: EPSS history · patch commit or PR link · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Changed
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

nvd-primary

Root cause

User content is inserted into the page as HTML. The browser interprets the content as code rather than data.

The bug in code

The whole CWE-79 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
commentEl.innerHTML = comment.body;

Fixed

ts
commentEl.textContent = comment.body;

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records