Stored Cross-Site Scripting in Filterable Portfolio Gallery by WordPress
CVE-2021-47929

5.1MEDIUM

Key Information:

Vendor

WordPress
Status
Filterable Portfolio Gallery
Vendor
CVE Published:
10 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47929?

The Filterable Portfolio Gallery plugin version 1.0 for WordPress contains a stored XSS vulnerability that allows authenticated users to inject malicious JavaScript. By entering harmful payloads into the title field, attackers can execute JavaScript code, such as image tags with onerror attributes, when other users preview the gallery. This introduces significant security risks as any visitor to the affected page can be compromised.

Affected Version(s)

Filterable Portfolio Gallery 1.0

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-2021-47929 - Proof of Concept

References

https://www.exploit-db.com/exploits/50458
exploit
http://www.filterable-portfolio.com/
product
https://wordpress.org/plugins/fg-gallery/
product

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Murat DEMIRCI (@butterflyhunt3r)
.