What’s Vulnerable › Vulnerabilities

CVE-2023-4271: Photospace Responsive <= 2.1.1 - Authenticated (Administrator+) Stored Cross-Site Scripting

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-10-20 · updated 2026-06-17
• Weakness: CWE-79

Description

The Photospace Responsive plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘psres_button_size’ parameter in versions up to, and including, 2.1.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Affected products

• deanoakley Photospace Responsive Gallery: before 2.2.0 — fixed in 2.2.0

How to fix

Upgrade to a fixed version: deanoakley Photospace Responsive Gallery 2.2.0. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/changeset/2831424/photospace-responsive/trunk/includes/class-photospace-responsive-gallery.php?contextall=1&old=2544748&old_path=%2Fphotospace-responsive%2Ftrunk%2Fincludes%2Fclass-photospace-responsive-gallery.php
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=2966110%40photospace-responsive%2Ftrunk&old=2875667%40photospace-responsive%2Ftrunk&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/3bc98896-6ff9-40de-ace2-2ca331c2a44a?source=cve
• https://plugins.trac.wordpress.org/changeset/2831424/photospace-responsive/trunk/includes/class-photospace-responsive-gallery.php?contextall=1&old=2544748&old_path=%2Fphotospace-responsive%2Ftrunk%2Fincludes%2Fclass-photospace-responsive-gallery.php
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=2966110%40photospace-responsive%2Ftrunk&old=2875667%40photospace-responsive%2Ftrunk&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/3bc98896-6ff9-40de-ace2-2ca331c2a44a?source=cve

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