What’s Vulnerable › Vulnerabilities

CVE-2021-24903: GRAND FlaGallery <= 6.1.2 - Admin+ Stored Cross-Site Scripting

• Severity: medium (CVSS 4.8 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: 2022-02-28 · updated 2026-06-17
• Weakness: CWE-79

Description

The GRAND FlaGallery WordPress plugin through 6.1.2 does not sanitise and escape some of its gallery settings, which could allow high privilege users to perform Cross-Site scripting attacks even when the unfiltered_html capability is disallowed.

Affected products

• Album and Image Gallery with Lightbox – Flagallery Photo Portfolio: through 6.1.2

References

• https://wpscan.com/vulnerability/ad67e45e-254a-46ce-a243-bfc86839446e
• https://wpscan.com/vulnerability/ad67e45e-254a-46ce-a243-bfc86839446e

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