Browser code execution via search template evaluation
Published Dec 4, 2025 · Updated May 26, 2026
Client-side template injection in Loaded Commerce 6.6 allows remote attackers to execute code in a visitor's browser via a crafted search URL. The search-results template evaluates the keywords parameter as template syntax instead of rendering it as inert text, causing arithmetic input to return its computed value. No authentication is needed to create the URL, but a victim must visit it; successful exploitation runs script with the storefront's browser privileges.
Summary
What happened
Client-side template injection in Loaded Commerce 6.6 allows remote attackers to execute code in a visitor's browser via a crafted search URL. The search-results template evaluates the keywords parameter as template syntax instead of rendering it as inert text, causing arithmetic input to return its computed value. No authentication is needed to create the URL, but a victim must visit it; successful exploitation runs script with the storefront's browser privileges.
The record
- CVE
- CVE-2025-66572
- Published
- Dec 4, 2025
- Updated
- May 26, 2026
- Vendor
- Loaded Commerce, LLC
- Product
- Loaded Commerce
- Classifications
- CWE-78, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 4, 2025CVE publishedPublication date reported by the CVE source.
- May 26, 2026Record 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=6.6
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
- Loaded Commerce 6.6 Client-Side Template Injection proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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