CVE-2019-14672 — Firefly III 4

Firefly III 4.7.17.5 is vulnerable to stored XSS due to the lack of filtration of user-supplied data in the liability name field. The JavaScript code is executed upon an error condition during a visit to the account show page.

01What is this vulnerability?

Firefly III 4.7.17.5 is vulnerable to stored XSS due to the lack of filtration of user-supplied data in the liability name field. The JavaScript code is executed upon an error condition during a visit to the account show page.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-08-05T19:22:58.000Z
• Last modified: 2024-08-05T00:19:41.336Z

09References

• github.com — https://github.com/firefly-iii/firefly-iii/issues/2370
• github.com — https://github.com/firefly-iii/firefly-iii/commit/8717f469b10e9f7e1547c6f70f7d24…