WordPress Plugin Vulnerabilities

Simply Schedule Appointments < 1.5.7.7 - Admin+ Stored Cross-Site Scripting

Description

The plugin does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)

Proof of Concept

Navigate to style settings: https://example.com/wp-admin/admin.php?page=simply-schedule-appointments%2F#/ssa/settings/styles

Put the following payload as "CUSTOM CSS": </style><script>alert(1)</script>

The XSS will be triggered in pages/posts where the shortcode for any appointment ([ssa_booking type=]) is embed

Affects Plugins

Plugin icon
simply-schedule-appointments
Fixed in 1.5.7.7

References

CVE
CVE-2022-2374

Classification

Type
XSS
OWASP top 10
A7: Cross-Site Scripting (XSS)
CWE
CWE-79
CVSS
3.4 (low)

Miscellaneous

Original Researcher
Raad Haddad of Cloudyrion GmbH
Submitter
Raad Haddad of Cloudyrion GmbH
Submitter twitter
raadfhaddad
Verified
Yes
WPVDB ID
12062d78-7a0d-4dc1-9bd6-6c54aa6bc761

Timeline

Publicly Published
2022-08-08 (about 1 years ago)
Added
2022-08-08 (about 1 years ago)
Last Updated
2023-04-12 (about 7 months ago)

Other

Published
Title
Published
2022-03-07
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Menu Image, Icons made easy < 3.0.8 - Subscriber+ Stored Cross-Site Scripting
Published
2023-11-16
Title
Quick Call Button <= 1.2.9 - Authenticated (Administrator+) Stored Cross-Site Scripting via settings
Published
2021-12-28
Title
Domain Check < 1.0.17 - Reflected Cross-Site Scripting
Published
2018-11-14
Title
Ninja Forms <= 3.3.17 - Unauthenticated Cross-Site Scripting (XSS)
Published
2021-10-14
Title
WpGenius Job Listing <= 1.0.2 - Admin+ Stored Cross-Site Scripting