Unauthenticated stored XSS via multipart field names
Published Oct 3, 2026 · Updated Oct 3, 2026
Stored XSS in WPClever WPC Product Options for WooCommerce 4.0.5 and earlier lets remote attackers inject scripts through guest checkout. The plugin stores a script-bearing wpcpo-* array key from a multipart Content-Disposition field name in order item metadata without sufficient sanitization or output escaping. Guest checkout requires no account; the stored script executes when a user opens an affected page.
Summary
What happened
Stored XSS in WPClever WPC Product Options for WooCommerce 4.0.5 and earlier lets remote attackers inject scripts through guest checkout. The plugin stores a script-bearing wpcpo-* array key from a multipart Content-Disposition field name in order item metadata without sufficient sanitization or output escaping. Guest checkout requires no account; the stored script executes when a user opens an affected page.
The record
- CVE
- CVE-2026-97660
- Published
- Oct 3, 2026
- Updated
- Oct 3, 2026
- Vendor
- WPClever
- Product
- WPC Product Options for WooCommerce
- Classifications
- Unavailable
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 3, 2026CVE publishedPublication date reported by the CVE source.
- Oct 3, 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=0 <=4.0.5
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
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.
Activity data is delayed. The latest report is Sep 28, 2026.
Weakness, pattern, technique
No sourced classifications are available.
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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