CVE-2022-0389

WP Time Slots Booking Form <= 1.1.62 - Stored Cross-Site Scripting

2022-02-02 00:00

Strategic Overview

Status: Patched in 1.1.63
Affected Plugin: WP Time Slots Booking Form
Affected Version: <= 1.1.62
CVSS: 5.5Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2022-0389

View all WP Time Slots Booking Form vulnerabilities

At a glance

CVE-2022-0389 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the WP Time Slots Booking Form WordPress plugin, affecting versions <= 1.1.62. It carries a CVSS score of 5.5 (reachable over the network; low attack complexity). The issue is fixed in version 1.1.63; sites on affected versions should update now. Disclosed February 2022, reported by Rubina Shaikh.

Vulnerability Overview

The WP Time Slots Booking Form WordPress plugin before 1.1.63 does not sanitise and escape Calendar names, allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

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

Reaching this weakness in WP Time Slots Booking Form <= 1.1.62 takes a caller who can reach the endpoint. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For WP Time Slots Booking Form the fix is 1.1.63: builds <= 1.1.62 are affected, anything from 1.1.63 onward is not.

Remediation

Update to version 1.1.63, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to WP Time Slots Booking Form: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: WP Time Slots Booking Form 1.1.63 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-0389 https://www.wordfence.com/threat-intel/vulnerabilities/id/5e584e2e-0625-4777-b44c-2d682c9a4c34 https://nvd.nist.gov/vuln/detail/CVE-2022-0389

Related records

Same weakness class

Other vulnerabilities in WP Time Slots Booking Form

CVSS Vector

5.5

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredHigh
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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