WP Subtitle <= 3.4 - Cross-Site Scripting

2022-04-25 00:00

Francesco Carlucci

Strategic Overview

Status

Patched in 3.4.1

Affected PluginWP Subtitle

Affected Version<= 3.4

CVSS6.1Medium

CVECVE-2022-1393

View all WP Subtitle vulnerabilities

Vulnerability Overview

The WP Subtitle WordPress plugin before 3.4.1 adds a subtitle field and provides a shortcode to display it via [wp_subtitle]. The subtitle is stored as a custom post meta with the key: "wps_subtitle", which is sanitized upon post save/update, however is not sanitized when updating it directly from the post meta update button (via AJAX) - and this makes the XSS exploitable by authenticated users with a role as low as contributor.

Technical Analysis

REMEDIATION: Update to version 3.4.1, or a newer patched version --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

https://www.cve.org/CVERecord?id=CVE-2022-1393 https://www.wordfence.com/threat-intel/vulnerabilities/id/9bc66669-ee38-408a-9dea-e6421cc6f75c

CVSS Vector

6.1

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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