CVE-2026-47693
Poweradmin: CSV Injection in log export endpoints allows formula execution in spreadsheet applications
Impact
Poweradmin is a web-based DNS administration tool for PowerDNS server. Versions prior to 4.2.4 and 4.3.3 are vulnerable to CSV Injection (Formula Injection) in its log export functionality. User-controlled data — specifically the username field — is written to exported CSV files without sanitizing formula trigger characters (=, +, -, @). When an administrator exports activity logs and opens the resulting CSV in a spreadsheet application (Microsoft Excel, LibreOffice Calc, Google Sheets), any formula stored in a username is executed by the application. This can be used for phishing attacks against administrators or data exfiltration. Versions 4.2.4 and 4.3.3 patch the issue.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | poweradmin/poweradmin | < 4.2.4 | 4.2.4 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-3h6h-67x3-cv5x
- https://github.com/poweradmin/poweradmin/security/advisories/GHSA-3h6h-67x3-cv5x
- https://github.com/poweradmin/poweradmin/releases/tag/v4.2.4
- https://github.com/poweradmin/poweradmin/releases/tag/v4.3.3
- https://nvd.nist.gov/vuln/detail/CVE-2026-47693