Security readout for executives and security teams
Plain-English summary
Firefly III versions before 4.7.17.3 could reflect unsafe search input back to a user, allowing browser-side script execution in that user's session. The public record notes the attacker must have the same access rights as the user, which narrows likely abuse but does not remove risk for shared or multi-user deployments.
Executive priority
Prioritize remediation where Firefly III is internet-facing, shared by multiple users, or used for sensitive financial data. This is not evidenced as actively exploited in the supplied sources, but XSS in a finance application can still affect confidentiality and user trust.
Technical view
CVE-2019-13646 is a reflected XSS issue in Firefly III before 4.7.17.3 caused by insufficient filtering of user-supplied search query data. The bundle provides no CVSS vector, CWE, CPE, or detailed affected-version matrix beyond the version threshold in the CVE description.
Likely exposure
Exposure is likely limited to Firefly III deployments running versions before 4.7.17.3, especially where authenticated users can access the vulnerable search feature. The source bundle does not identify specific hosted services, packages, or CPEs.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. The CVE note says exploitation requires the attacker to have the same access rights as the user, suggesting an authenticated or same-privilege context rather than broad unauthenticated internet exposure.
Researcher notes
Public evidence is sparse. The CVE record names reflected XSS in search input and points to a GitHub issue and compare view, but the bundle lacks CVSS, CWE, CPEs, exploit status, and detailed fix notes. Avoid assuming broader product impact beyond Firefly III before 4.7.17.3.
Mitigation direction
- Upgrade Firefly III to version 4.7.17.3 or later.
- Check Firefly III project guidance for any additional XSS-related remediation notes.
- Restrict access to Firefly III to trusted users until upgraded.
- Treat suspicious search links or unexpected browser behavior as potential XSS indicators.
Validation and detection
- Inventory Firefly III instances and confirm installed versions.
- Verify any instance below 4.7.17.3 is prioritized for update.
- Review application logs for unusual search-query activity around user sessions.
- Confirm search query output is safely encoded after upgrade.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2019-13646 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/firefly-iii/firefly-iii/compare/a70b7cc...7d482aaCVE reference · x_refsource_MISC
- https://github.com/firefly-iii/firefly-iii/issues/2339CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.