Unauthenticated PHP Code Execution in AccessAlly WordPress Plugin
CVE-2020-36875

9.3CRITICAL

Key Information:

Vendor

WordPress
Status
Accessally
Vendor
CVE Published:
9 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2020-36875?

The AccessAlly WordPress plugin, prior to version 3.3.2, contains a vulnerability where the Login Widget processes the 'login_error' parameter as PHP code without authentication. This flaw allows an attacker to inject and execute arbitrary PHP commands on the WordPress server, potentially leading to unauthorized remote code execution. Website administrators using affected versions of AccessAlly should upgrade to 3.3.2 or later to mitigate this security risk.

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Affected Version(s)

AccessAlly 0 < 3.3.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2020-36875 - Proof of Concept

References

https://accessally.com/software-release/accessally-3-3-2/
vendor-advisorypatch
https://wpscan.com/vulnerability/c644de6d-098d-4889-b75d-...
third-party-advisoryexploit
https://www.vulncheck.com/advisories/accessally-unauthent...
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Brad Patton
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