What’s Vulnerable › Vulnerabilities

CVE-2021-24439: Browser Screenshots < 1.7.6 - Contributor+ Stored XSS

• 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: 2021-07-12 · updated 2026-06-17
• Weakness: CWE-79

Description

The Browser Screenshots WordPress plugin before 1.7.6 allowed authenticated users with a role as low as Contributor to perform Stored Cross-Site Scripting attacks as the image_class parameter of the browser-shot shortcode was not escaped.

Affected products

• Browser Screenshots: before 1.7.6 — fixed in 1.7.6

How to fix

Upgrade to a fixed version: Browser Screenshots 1.7.6. Check the vendor advisory for mitigations.

References

• https://wpscan.com/vulnerability/9c538c51-ae58-461d-b93b-cc9dfebf2bc0
• https://wpscan.com/vulnerability/9c538c51-ae58-461d-b93b-cc9dfebf2bc0

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