Stored XSS via unsanitized thumbnail-height setting
Published Jan 7, 2025 · Updated Jan 7, 2025
Stored XSS in Category Posts Widget before 4.9.18 allows remote authenticated users to inject scripts through widget settings. The thumb_h thumbnail-height parameter is stored without adequate sanitization or output escaping and is rendered into the public-facing widget. Administrator-level access and disabled unfiltered_html, as on WordPress multisite, are required; a visitor who loads the widget executes the injected script.
Summary
What happened
Stored XSS in Category Posts Widget before 4.9.18 allows remote authenticated users to inject scripts through widget settings. The thumb_h thumbnail-height parameter is stored without adequate sanitization or output escaping and is rendered into the public-facing widget. Administrator-level access and disabled unfiltered_html, as on WordPress multisite, are required; a visitor who loads the widget executes the injected script.
The record
- CVE
- CVE-2024-9638
- Published
- Jan 7, 2025
- Updated
- Jan 7, 2025
- Vendor
- TipTop-Press
- Product
- Category Posts Widget
- Classifications
- CWE-79, T1203
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Jan 7, 2025CVE publishedPublication date reported by the CVE source.
- Jan 7, 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=0 <4.9.18
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
- WPScan widget-settings stored XSS proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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