What’s Vulnerable › Vulnerabilities

CVE-2021-24252: Event Banner <= 1.3 - Arbitrary File Upload to RCE

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-05-06 · updated 2026-06-17
• Weakness: CWE-434

Description

The Event Banner WordPress plugin through 1.3 does not verify the uploaded image file, allowing admin accounts to upload arbitrary files, such as .exe, .php, or others executable, leading to RCE. Due to the lack of CSRF check, the issue can also be used via such vector to achieve the same result, or via a LFI as authorisation checks are missing (but would require WP to be loaded)

Affected products

• Event Banner: through 1.3

References

• https://github.com/jinhuang1102/CVE-ID-Reports/blob/master/Event%20Banner.md
• https://wpscan.com/vulnerability/91e81c6d-f24d-4f87-bc13-746715af8f7c
• https://github.com/jinhuang1102/CVE-ID-Reports/blob/master/Event%20Banner.md
• https://wpscan.com/vulnerability/91e81c6d-f24d-4f87-bc13-746715af8f7c

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