Reflected Cross-Site Scripting Vulnerability in Seraphinite Accelerator Plugin for WordPress
CVE-2026-17532

6.1MEDIUM

Key Information:

Vendor

WordPress
Status
Seraphinite Accelerator
Vendor
CVE Published:
5 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-17532?

The Seraphinite Accelerator plugin for WordPress is susceptible to a reflected cross-site scripting (XSS) vulnerability. This issue arises through improper validation of the 'seraph_accel_prep' parameter in versions 2.29.15 and earlier. Specifically, the CacheExtractPreparePageParams() function fails to securely compare the HMAC string against a decoded JSON 'nonce' value, which could allow an attacker to bypass critical checks. An attacker can exploit this flaw by tricking users into clicking a specially crafted link, enabling them to inject arbitrary scripts into web pages that execute within the user's browser context, potentially leading to unauthorized actions and data exposure.

Affected Version(s)

Seraphinite Accelerator 0 <= 2.29.18

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-2026-17532
Created by kalhoralireza

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/seraphinite-ac...
https://plugins.trac.wordpress.org/browser/seraphinite-ac...

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Alireza
.