CVE intelligence and bounded remediation

CVE-2021-30134 — Php Curl Class Project Php Curl Class security vulnerability

Medium CVSS 6.1

php-mod/curl (a wrapper of the PHP cURL extension) before 2.3.2 allows XSS via the post_file_path_upload.php key parameter and the POST data to post_multidimensional.php.

Severity
Medium
CVSS
6.1 (3.1)
Published
2022-12-26
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-79

Affected products

  • php_curl_class_project / php_curl_class
  • ht_slider_range_for_amazon_affiliates_project / ht_slider_range_for_amazon_affiliates
  • qiwi / woo-qiwi-payment-gateway
  • teamleade / teamleader_crm_forms
  • ptwooplugins / invoicing_with_invoicexpress_for_woocommerce
  • shopello_api_project / shopello_api

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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