JavaScript Injection in Meow Gallery WordPress Plugin by Meow Apps
CVE-2026-15386

5.4MEDIUM

Key Information:

Vendor

WordPress
Status
Meow Gallery
Vendor
CVE Published:
7 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-15386?

The Meow Gallery plugin for WordPress, prior to version 5.5.2, is susceptible to a JavaScript injection vulnerability. The plugin fails to properly escape the alt text of attachments when generating output for linked galleries. As a result, users with Author roles or higher are able to store a potentially harmful JavaScript payload. This payload executes in the browsers of any visitors, including site administrators, who view posts containing galleries. Websites utilizing affected versions should apply the necessary updates to mitigate this risk.

Affected Version(s)

Meow Gallery 0 < 5.5.2

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-2026-15386 - Proof of Concept

References

https://wpscan.com/vulnerability/f76518ec-3abb-4b3c-b592-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Karthik Ramakrishnan
WPScan
.