EUVD-2026-37980
GHSA-vgc7-h39p-hg9j
Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Stored XSS requires a victim to visit the affected page (UI:R); all other metrics match the published vector, with S:C reflecting browser-context escape.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Lifecycle Timeline
2DescriptionCVE.org
The Appointment Booking Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via custom booking field labels in all versions up to, and including, 1.4.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
AnalysisAI
Stored Cross-Site Scripting in the Creavi Appointment Booking Calendar plugin for WordPress (all versions through 1.4.4) allows authenticated attackers holding Author-level access or higher to permanently inject arbitrary JavaScript via unsanitized custom booking field labels. The malicious payload executes in the browser of any user who subsequently visits a page containing the injected booking form, enabling session hijacking, credential harvesting, or malicious redirects against site visitors and administrators alike. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to hold an authenticated WordPress session at Author-level access or higher on the target site - unauthenticated exploitation is not possible per the PR:L CVSS metric. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The NVD/Wordfence CVSS 6.4 (Medium) score is driven by AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who holds or obtains an Author-level WordPress account on a target site navigates to the Appointment Booking Calendar plugin's configuration and sets a custom booking field label to a value containing a malicious script tag or JavaScript event handler. The payload is stored in the database without sanitization. … |
| Remediation | Upstream fix available via WordPress plugin Trac changeset 3564451 (https://plugins.trac.wordpress.org/changeset/3564451/creavi-booking-service); however, a specific patched release version number is not independently confirmed from the available data - administrators should check the WordPress plugin repository for an updated release beyond 1.4.4 and upgrade immediately upon availability. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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