vulnerability / NVI-00007190 / Revision 1
C5 Firefly III CSV Injection.
OSV carries this publisher advisory for grumpydictator/firefly-iii. This is an aggregated source copy; consult the original publisher and compare update dates.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
Published affected context helps an owner decide what evidence to gather. This report has not examined your application.
02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
grumpydictator/firefly-iii
source listedECOSYSTEM: introduced 0; fixed 6.1.7
### Summary CSV injection is a vulnerability where untrusted user input in CSV files can lead to unauthorized access or data manipulation. In my subsequent testing of the application. ### Details I discovered that there is an option to "Export Data" from the web app to your personal computer, which exports a "csv" file that can be opened with Excel software that supports macros. P.S I discovered that the web application's is offering a demo-site that anyone may access to play with the web application. So, there's a chance that someone will export the data (CVS) from the demo site and execute it on their PC, giving the malicious actor a complete control over their machine. (if a user enters a malicious payload to the website). ### PoC You can check out my vulnerability report if you need more details/PoC with screenshots: (removed by JC5) ### Impact An attacker can exploit this by entering a specially crafted payload to one of the fields, and when a user export the csv file using the "Export Data" function, the attacker can potentiality can RCE. ### Addendum by JC5, the developer of Firefly III There is zero impact on normal users, even on vulnerable versions.
03 / Response
What to do next
- vendor patch
The original advisory lists fixed boundaries 6.1.7 for grumpydictator/firefly-iii. Confirm the publisher’s latest guidance.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database via OSV
A fixed release is not deployment evidence.
Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.
04 / Limits
What this report cannot establish
- Customer inventory, deployment, reachability and exploitation have not been inspected.
05 / Provenance
Sources you can inspect
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- GHSA-29w6-c52g-m8jc ↗
GitHub Advisory Database via OSV · vendor advisory
Observed . GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.
Public revision history
Only published revisions appear here. Routine fetches do not create a material-change event.
- Revision 1 ·
First indexed by Null; source disclosure date is shown separately.