CVE-2022-0421Public exploitNetwork attack vector

Stored XSS via unauthenticated payment-status update

Published Nov 21, 2022 · Updated Apr 30, 2025

Stored XSS in Five Star Restaurant Reservations before 2.4.12 allows remote attackers to execute script in an administrator's browser. The unauthenticated rtb_stripe_pmt_succeed AJAX action accepts an arbitrary booking_id and stores an unescaped message when marking payment failed. A valid booking ID and an administrator viewing failed payments are required; attackers can alter payment status and run script in that session.

CVSS severity6.1
Medium
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stored XSS in Five Star Restaurant Reservations before 2.4.12 allows remote attackers to execute script in an administrator's browser. The unauthenticated rtb_stripe_pmt_succeed AJAX action accepts an arbitrary booking_id and stores an unescaped message when marking payment failed. A valid booking ID and an administrator viewing failed payments are required; attackers can alter payment status and run script in that session.

The record

CVE
CVE-2022-0421
Published
Nov 21, 2022
Updated
Apr 30, 2025
Vendor
Five Star Plugins
Product
Five Star Restaurant Reservations
Classifications
CWE-116, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 21, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 30, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2.4.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Five Star Plugins · Five Star Restaurant Reservationsversion=0 <2.4.12

Published CVSS scores

6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-116Improper Encoding or Escaping of Output
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo