CVE-2026-9673 json-2-csv vulnerable to CSV Injection via the preventCsvInjection optio
Attackers can bypass CSV injection protections to inject malicious formulas that execute when files are opened in spreadsheet applications.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-9673?
CVE-2026-9673 is a high-severity vulnerability in json-2-csv, published on 28 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Versions of the package json-2-csv from 3.15.0 and before 5.5.11 are vulnerable to CSV Injection via the preventCsvInjection option which can be bypassed. An attacker can inject formulas into CSV files, which execute when the files are opened in spreadsheet applications.
Weakness: CWE-1236
Which versions are affected by CVE-2026-9673?
2 open source packages ship an affected version, including json-2-csv.
| Package | Affected | Fixed in |
|---|---|---|
json-2-csv npm | From 3.15.0 | 5.5.11 |
json-2-csv npm | From 3.15.0 | 5.5.11 |
How do I fix CVE-2026-9673?
Upgrade json-2-csv to 5.5.11 or later.
Is CVE-2026-9673 being exploited?
There is no known exploitation of CVE-2026-9673 in the wild and no public exploit code.
Sources
Also known as ECHO-b9d4-fcc8-c445, GHSA-g27c-q7cp-mhx6, MINI-8x8x-w5vf-q5pf, MINI-9v56-2vvr-8jfq, MINI-h62p-3ppm-w5cp, MINI-w2wc-qrr8-56jv.