CVE intelligence and bounded remediation

CVE-2023-49657 — A stored cross-site scripting (XSS) vulnerability exists in Apache Superset before 3.0.3

Critical CVSS 9.6

A stored cross-site scripting (XSS) vulnerability exists in Apache Superset before 3.0.3. An authenticated attacker with create/update permissions on charts or dashboards could store a script or add a specific HTML snippet that would act as a stored XSS. For 2.X versions, users should change their config to include: TALISMAN_CONFIG = { "content_security_policy": { "base-uri": ["'self'"], "default-src": ["'self'"], "img-src": ["'self'", "blob:", "data:"], "worker-src": ["'self'", "blob:"], "connect-src": [ "'self'", " https://api.mapbox.com" https://api.mapbox.com" ;, " https://events.mapbox.com" https://events.mapbox.com" ;, ], "object-src": "'none'", "style-src": [ "'self'", "'unsafe-inline'", ], "script-src": ["'self'", "'strict-dynamic'"], }, "content_security_policy_nonce_in": ["script-src"], "force_https": False, "session_cookie_secure": False, }

Severity
Critical
CVSS
9.6 (3.1)
Published
2024-01-23
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-79

Affected products

  • apache / superset

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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