CVE-2026-12980: CWE-79 Cross-Site Scripting (XSS) in Post Snippets
Description
The Post Snippets WordPress plugin through 4.2.4 does not properly escape variable values substituted into snippets before outputting them, allowing users with the Contributor role and above to inject arbitrary web scripts that execute when the content is viewed.
CVSS v3.1
Score 6.8medium
Affected software
Post Snippets
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-12980 is a CWE-79 Cross-Site Scripting vulnerability in the Post Snippets WordPress plugin versions up to and including 4.2.4. The vulnerability occurs due to improper escaping of variable values substituted into snippets before rendering. This allows users with Contributor or higher privileges to inject malicious scripts that execute in the context of users viewing the affected content.
Potential Impact
An attacker with Contributor or higher privileges can inject arbitrary scripts that execute in the browsers of users viewing the affected snippets. This can lead to session hijacking, defacement, or other script-based attacks within the scope of the affected site. The vulnerability requires authenticated user privileges at least at the Contributor level.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch is available, restrict Contributor role permissions or avoid using the vulnerable plugin versions. Monitor official Post Snippets plugin channels for updates addressing this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-06-23T11:27:30.490Z
- State
- PUBLISHED
Threat ID: 6acb2ddf2cdf04f656b78cec
Added to database: 10/11/2026, 06:34:07 UTC
Last enriched: 10/11/2026, 07:18:22 UTC
Last updated: 10/11/2026, 21:33:38 UTC
Views: 2
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