Unauthenticated reflected XSS via unescaped table output
Published Aug 6, 2026 · Updated Aug 6, 2026
Reflected XSS in WP Data Access 5.5.79 and earlier allows remote attackers to execute scripts in a visitor's browser via crafted input. Table and shortcode rendering emits attacker-controlled titles and links into HTML without context-appropriate output escaping. Exploitation requires a visitor to load the reflected payload; the resulting script runs in the site's origin and can act with that visitor's browser privileges.
Summary
What happened
Reflected XSS in WP Data Access 5.5.79 and earlier allows remote attackers to execute scripts in a visitor's browser via crafted input. Table and shortcode rendering emits attacker-controlled titles and links into HTML without context-appropriate output escaping. Exploitation requires a visitor to load the reflected payload; the resulting script runs in the site's origin and can act with that visitor's browser privileges.
The record
- CVE
- CVE-2026-66663
- Published
- Aug 6, 2026
- Updated
- Aug 6, 2026
- Vendor
- Passionate Programmer Peter
- Product
- WP Data Access
- Classifications
- CWE-79, CAPEC-591, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 6, 2026CVE publishedPublication date reported by the CVE source.
- Aug 6, 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?
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- Affected versionversion=n/a <=5.5.79 changes=[{"at":"5.5.80","status":"unaffected"}]
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
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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