Cross-Site Scripting in Post Snippets Plugin for WordPress
CVE-2026-12980

6.8MEDIUM

Key Information:

Vendor

WordPress
Status
Post Snippets
Vendor
CVE Published:
11 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-12980?

The Post Snippets plugin for WordPress, up to version 4.2.4, contains a vulnerability due to improper handling of user-provided input. This flaw permits users with Contributor roles and higher to inject arbitrary web scripts into snippets. When these snippets are rendered, the inserted scripts execute in the context of the viewer's browser, potentially compromising user data and site integrity.

Affected Version(s)

Post Snippets 0 <= 4.2.4

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-2026-12980 - Proof of Concept

References

https://wpscan.com/vulnerability/288d419a-9e27-45ae-bde1-...
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

Philipp Doblhofer
WPScan
.