CVE intelligence and bounded remediation

CVE-2019-13644 — Firefly III before 4.7.17.1 is vulnerable to stored XSS due to lack of filtration of user-supplied data in a budget name

Medium CVSS 5.4

Firefly III before 4.7.17.1 is vulnerable to stored XSS due to lack of filtration of user-supplied data in a budget name. The JavaScript code is contained in a transaction, and is executed on the tags/show/$tag_number$ tag summary page. NOTE: It is asserted that an attacker must have the same access rights as the user in order to be able to execute the vulnerability

Severity
Medium
CVSS
5.4 (3.1)
Published
2019-07-18
CISA KEV
Not currently listed
Ecosystem
javascript/npm
Weaknesses
CWE-79

Affected products

  • firefly-iii / firefly_iii

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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