Unauthenticated stored XSS via unchecked custom code
Published Nov 21, 2025 · Updated Nov 21, 2025
Stored XSS in Iqonic Design WPBookit 1.0.6 and earlier allows remote attackers to inject scripts through an unauthenticated AJAX request. The wpb_ajax_post route exposes save_custome_code without a nonce or capability check, and the handler stores raw css_code and js_code values that WordPress later emits as inline code. Any visitor can persist script that executes in the browser context of every user who loads an affected site page.
Summary
What happened
Stored XSS in Iqonic Design WPBookit 1.0.6 and earlier allows remote attackers to inject scripts through an unauthenticated AJAX request. The wpb_ajax_post route exposes save_custome_code without a nonce or capability check, and the handler stores raw css_code and js_code values that WordPress later emits as inline code. Any visitor can persist script that executes in the browser context of every user who loads an affected site page.
The record
- CVE
- CVE-2025-12135
- Published
- Nov 21, 2025
- Updated
- Nov 21, 2025
- Vendor
- Iqonic Design
- Product
- WPBookit
- Classifications
- CWE-79, T1190, T1059.007
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 21, 2025CVE publishedPublication date reported by the CVE source.
- Nov 21, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=* <=1.0.6
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- d0n601 WPBookit stored-XSS proof of conceptfunctional · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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