CVE-2026-47693 Poweradmin: CSV Injection in log export endpoints allows formula execution in spreadsheet applications
Attackers can inject malicious formulas into exported CSV logs, leading to code execution or data exfiltration when administrators open the file in spreadsheet software.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-47693?
CVE-2026-47693 is a medium-severity vulnerability in poweradmin, published on 23 Jun 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-1236
Which versions are affected by CVE-2026-47693?
4 open source packages ship an affected version, including poweradmin/poweradmin.
| Package | Affected | Fixed in |
|---|---|---|
poweradmin/poweradmin Packagist | All versions | 4.2.4 |
poweradmin/poweradmin Packagist | All versions | 4.2.4 |
poweradmin/poweradmin Packagist | From 4.3.0 | 4.3.3 |
poweradmin/poweradmin Packagist | From 4.3.0 | 4.3.3 |
How do I fix CVE-2026-47693?
Upgrade poweradmin/poweradmin to a fixed version for your release line: 4.2.4 or 4.3.3.
Is CVE-2026-47693 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-47693 exists.
Sources
Also known as GHSA-3h6h-67x3-cv5x.