Subscriber-level script execution in visitor browsers
Published Aug 13, 2026 · Updated Aug 13, 2026
Cross-site scripting in BestWebSoft Profile Extra Fields 1.3.4 and earlier allows remote authenticated users to run scripts in browsers. Patchstack has not disclosed the affected field, request parameter, rendering path, or missing neutralization operation, leaving the concrete input-to-output mechanism unpublished. Subscriber access is required to initiate the attack, and successful exploitation requires another user to visit or act on affected content; script execution remains confined to that user’s browser context.
Summary
What happened
Cross-site scripting in BestWebSoft Profile Extra Fields 1.3.4 and earlier allows remote authenticated users to run scripts in browsers. Patchstack has not disclosed the affected field, request parameter, rendering path, or missing neutralization operation, leaving the concrete input-to-output mechanism unpublished. Subscriber access is required to initiate the attack, and successful exploitation requires another user to visit or act on affected content; script execution remains confined to that user’s browser context.
The record
- CVE
- CVE-2026-66456
- Published
- Aug 13, 2026
- Updated
- Aug 13, 2026
- Vendor
- BestWebSoft
- Product
- Profile Extra Fields
- Classifications
- CWE-79, CAPEC-588, T1059.007
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 13, 2026CVE publishedPublication date reported by the CVE source.
- Aug 13, 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=n/a <=1.3.4
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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