Stored Cross-Site Scripting Vulnerability in All in One SEO Plugin
CVE-2026-82884

6.8MEDIUM

Key Information:

Vendor

WordPress
Status
All In One Seo
Vendor
CVE Published:
2 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-82884?

The All in One SEO plugin for WordPress, prior to version 5.0.0.1, contains a vulnerability where it fails to properly sanitize and escape content stored within posts. This oversight allows users with contributor roles and above to conduct Stored Cross-Site Scripting attacks. The vulnerability is triggered when a privileged user edits a post that contains the malicious content, potentially leading to unauthorized script execution and compromising site integrity.

Affected Version(s)

All in One SEO 0 < 5.0.0.1

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-2026-82884 - Proof of Concept

References

https://wpscan.com/vulnerability/9d4e5075-062a-42d7-beba-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
6.8
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
Required
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Asaf Mozes
WPScan
.