CVE-2019-13646
CWE-79Published: July 18, 2019· Updated: Jun 17, 2026
Official Description
Firefly III before 4.7.17.3 is vulnerable to reflected XSS due to lack of filtration of user-supplied data in a search query. 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
Technical Analysis
CVE-2019-13646 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.
From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (4)
Quick Facts
Related CVEs (CWE-79)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2019-13646 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts