CVE-2026-9673: json-2-csv · CSV Injection
Affects json-2-csvSource CVE Database V5
Public exploit available · CVSS 7.0 High : upgrade to 5.5.11 as a priority.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 5.5.11
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:PExploitation evidence
Disclosed: evidence found.
CVE published 28 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CVSS exploit maturity: proof of concept public
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade json-2-csv to 5.5.11.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| json-2-csv | Affected
| Fixed in
|
| org.webjars.npm:json-2-csv | Affected
| Fixed in– |
npmjson-2-csvpkg:npm/json-2-csvOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
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.
References
- security.snyk.io/vuln/SNYK-JS-JSON2CSV-14221326 (opens in a new tab)
- security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-17115116 (opens in a new tab)
- github.com/mrodrig/json-2-csv/blob/main/src/json2csv.ts%23L410 (opens in a new tab)
- gist.github.com/whoamins/299745a2d36b482b44e9613b78e40613 (opens in a new tab)
- github.com/mrodrig/json-2-csv/commit/0fdd0bb6d0273178cd940afc323ccbce19688229 (opens in a new tab)