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CVE-2021-24544: Responsive WordPress Slider <= 2.2.0 - Subscriber+ Stored Cross-Site Scripting

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-10-25 · updated 2026-06-17
• Weakness: CWE-79

Description

The Responsive WordPress Slider WordPress plugin through 2.2.0 does not sanitise and escape some of the Slider options, allowing Cross-Site Scripting payloads to be set in them. Furthermore, as by default any authenticated user is allowed to create Sliders (https://wordpress.org/support/topic/slider-can-be-changed-from-any-user-even-subscriber/, such settings can be changed in the plugin's settings), this would allow user with a role as low as subscriber to perform Cross-Site Scripting attacks against logged in admins viewing the slider list and could lead to privilege escalation by creating a rogue admin account for example.

Affected products

• Responsive WordPress Slider: through 2.2.0

References

• https://wpscan.com/vulnerability/4a2dddfc-6ce2-4edd-aaaa-4c130a9356d0
• https://wpscan.com/vulnerability/4a2dddfc-6ce2-4edd-aaaa-4c130a9356d0

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