What’s Vulnerable › Vulnerabilities

CVE-2021-45268

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-02-03 · updated 2026-06-17
• Weakness: CWE-352

Description

A Cross Site Request Forgery (CSRF) vulnerability exists in Backdrop CMS 1.20, which allows Remote Attackers to gain Remote Code Execution (RCE) on the Hosting Webserver via uploading a maliciously add-on with crafted PHP file. NOTE: the vendor disputes this because the attack requires a session cookie of a high-privileged authenticated user who is entitled to install arbitrary add-ons

Affected products

• backdropcms Backdrop: 1.20.0

References

• https://github.com/V1n1v131r4/CSRF-to-RCE-on-Backdrop-CMS
• https://www.exploit-db.com/exploits/50323
• https://github.com/V1n1v131r4/CSRF-to-RCE-on-Backdrop-CMS
• https://www.exploit-db.com/exploits/50323

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