CVE-2026-47693 json
Poweradmin: CSV Injection in log export endpoints allows formula execution in spreadsheet applications
published 2026-06-08 5 mo ago modified 2026-09-10 1 mo ago also GHSA-3h6h-67x3-cv5x , EUVD-2026-38632
- cvss
- 6.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 31%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- packagist poweradmin/poweradmin 4.2.4, 4.3.3
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 4 mo ago
Exploit prediction
0.38% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/poweradmin/poweradmin/security/advisories/GHSA-3h6h-67x3-cv5x referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:N |
| GitHub | 3.1 | 6.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | poweradmin/poweradmin | <4.2.4 >=4.3.0, <4.3.3 |
4.2.4 4.3.3 |
Affected products
- poweradmin poweradmin
Classification
- Weakness
-
- CWE-1236 Improper Neutralization of Formula Elements in a CSV File
References
Sources
- CVE List CVE-2026-47693
- GitHub Advisory GHSA-3h6h-67x3-cv5x
- NVD CVE-2026-47693
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