CVE-2021-45268

HIGH
Published Feb 3, 20224y ago · Modified Jun 17, 20261w ago
8.8 CVSS 3.1
High
Find Similar
Published Feb 3, 2022 4y ago
Last Modified Jun 17, 2026 1w ago

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

CVSS Details

Base Score
8.8
Exploitability
2.8
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-352 Cross-Site Request Forgery (CSRF) Authentication

Affected Products 1

VendorProductVersionRange
backdropcmsbackdrop1.20.0any

References 2

  • github.com https://github.com/V1n1v131r4/CSRF-to-RCE-on-Backdrop-CMS
    ExploitThird Party Advisory
  • exploit-db.com https://www.exploit-db.com/exploits/50323
    Third Party AdvisoryVDB Entry

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.