CVE intelligence and bounded remediation

CVE-2021-37330 — Laravel Booking System Booking Core 2.0 is vulnerable to Cross Site Scripting (XSS)

Medium CVSS 5.4

Laravel Booking System Booking Core 2.0 is vulnerable to Cross Site Scripting (XSS). The Avatar upload in the My Profile section could be exploited to upload a malicious SVG file which contains Javascript. Now if another user/admin views the profile and clicks to view his avatar, an XSS will trigger.

Severity
Medium
CVSS
5.4 (3.1)
Published
2021-10-04
CISA KEV
Not currently listed
Ecosystem
javascript/npm
Weaknesses
CWE-79

Affected products

  • bookingcore / booking_core / 2.0

Matched remediation archetype

Cross-site scripting and unsafe browser output

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Trace reflected, stored, and DOM-derived untrusted values into HTML, attributes, URLs, styles, scripts, and client-side template sinks.
  • Identify affected origins, authenticated user roles, sensitive browser capabilities, and where content is shared across tenants.
  • Review framework escaping, rich-text sanitization, legacy templates, and client-side rendering paths.

Remediate safely

  • Use context-aware framework output encoding and safe DOM APIs; keep untrusted data out of executable contexts.
  • Sanitize intentionally supported markup with a maintained allowlist policy and validate URLs and attributes separately.
  • Update affected rendering components and add tests for every output context using inert sentinel markup.

Authoritative sources

Complete CVE record and remediation plan

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