Security readout for executives and security teams
Plain-English summary
Firefly III versions before 4.7.17.3 allowed stored cross-site scripting through user-supplied image attachment content. A malicious attachment could run JavaScript when viewed, but the CVE notes the attacker needs the same access rights as the victim.
Executive priority
Treat as a targeted application risk, not an emergency internet-wide crisis based on available evidence. Prioritize upgrade if Firefly III stores sensitive finance data or has many users with attachment access.
Technical view
The flaw is stored XSS from insufficient filtering of user-controlled data inside image file content. Execution occurs during attachment viewing at attachments/view/$file_id$. The provided record names Firefly III before 4.7.17.3 and does not provide CVSS, CWE, or detailed affected CPE data.
Likely exposure
Exposure is most likely in self-hosted Firefly III deployments running versions earlier than 4.7.17.3 where users can create or access attachments.
Exploitation context
The source bundle does not show active exploitation, and the CVE is not listed as KEV. The CVE note says an attacker must have the same access rights as the user to execute the vulnerability.
Researcher notes
Evidence is limited to the CVE description and GitHub references. The record does not include CVSS, CWE, CPEs, or exploit reports. Avoid assuming unauthenticated reachability or public exploitation without additional vendor or incident evidence.
Mitigation direction
- Upgrade Firefly III to 4.7.17.3 or later.
- Review vendor issue and commit references for the exact fix context.
- Limit attachment access to trusted users until upgraded.
- Check vendor guidance if upgrade constraints exist.
Validation and detection
- Inventory Firefly III instances and record exact versions.
- Confirm no production instance is earlier than 4.7.17.3.
- Review attachment permissions for broad or shared access.
- Regression-test attachment viewing after upgrade.
- Check security monitoring for unusual attachment-related activity.
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
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CVE-2019-13647 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/2338CVE 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.