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Stored XSS in Smart Appointment & Booking WordPress plugin (saab_save_form_data AJAX)

IdentifiersCVE-2026-0742CWE-79· Improper Neutralization of Input…

The Smart Appointment & Booking plugin for WordPress is vulnerable to stored cross-site scripting (XSS) via the saab_save_form_data AJAX action in all versions up to and including 1.0.7. The issue is caused by insufficient input sanitization and output escaping of user-supplied attributes, allowing an authenticated attacker (Subscriber role or higher) to inject arbitrary script content that is stored and later executed in victims’ browsers when they access an affected page.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

An authenticated attacker (Subscriber+) can persistently inject arbitrary JavaScript into site pages. When executed in a victim’s browser, this can enable session hijacking, account takeover (e.g., via stolen admin cookies), malicious redirects, and content manipulation/actions performed in the security context of the visiting user.

Mitigation

If you can’t patch tonight, do this now.

Restrict access to the plugin’s relevant functionality to trusted roles (avoid granting Subscriber access where possible), and apply compensating controls such as WAF rules to detect/block XSS payloads targeting the saab_save_form_data AJAX endpoint. Enforce a strict Content Security Policy (CSP) to reduce the impact of any injected script that might execute.

Remediation

Patch, then assume compromise.

Update the Smart Appointment & Booking plugin to a version newer than 1.0.7 that implements proper input sanitization and output escaping for the saab_save_form_data AJAX action. If no fixed version is available, remove/disable the plugin.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
WordpressSmart Appointment & Bookingapplication
WordpressSmart Appointment & Booking Pluginapplication

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What this page doesn’t show

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Threat actor evidence

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Associated malware

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Detection signatures

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Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity1

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