CVE intelligence and bounded remediation

CVE-2021-41952 — Zenario CMS 9.0.54156 is vulnerable to Cross Site Scripting (XSS) via upload file to *.SVG

Medium CVSS 4.8

Zenario CMS 9.0.54156 is vulnerable to Cross Site Scripting (XSS) via upload file to *.SVG. An attacker can send malicious files to victims and steals victim's cookie leads to account takeover. The person viewing the image of a contact can be victim of XSS.

Severity
Medium
CVSS
4.8 (3.1)
Published
2022-03-14
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-79

Affected products

  • tribalsystems / zenario / 9.0.54156

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

The detailed catalog view below loads this exact record, its source evidence, and the full seven-phase agentic change plan.