Stored Cross-Site Scripting Vulnerability in Reading Progressbar Plugin by WordPress
CVE-2026-2687

4.3MEDIUM

Key Information:

Vendor

WordPress
Status
Reading Progressbar
Vendor
CVE Published:
12 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2687?

The Reading Progressbar plugin for WordPress prior to version 1.3.1 is susceptible to Stored Cross-Site Scripting attacks. This vulnerability arises because the plugin fails to adequately sanitize and escape certain settings. As a result, even users with high privilege access, such as administrators, can exploit this flaw to execute malicious scripts within the application. This issue may pose a significant risk especially in multisite configurations where unfiltered HTML capabilities are usually restricted.

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Affected Version(s)

Reading progressbar 0 < 1.3.1

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-2026-2687 - Proof of Concept

References

https://wpscan.com/vulnerability/af2e1249-2b69-47b6-85aa-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
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

Krugov Artyom
WPScan
JSON
.