CVE intelligence and bounded remediation

CVE-2022-39824 — Appsmith Appsmith security vulnerability

High CVSS 8.9

Server-side JavaScript injection in Appsmith through 1.7.14 allows remote attackers to execute arbitrary JavaScript code from the server via the currentItem property of the list widget, e.g., to perform DoS attacks or achieve an information leak.

Severity
High
CVSS
8.9 (3.1)
Published
2022-09-05
CISA KEV
Not currently listed
Ecosystem
javascript/npm
Weaknesses
CWE-79

Affected products

  • appsmith / appsmith

Matched remediation archetype

Cross-site scripting and unsafe browser output

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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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