CVE-2026-64955
Velociraptor CSV Formula Injection in Export Pipeline
Description
When Microsoft Excel imports a CSV file, it executes cells beginning with certain characters as formulas, giving such CSV files arbitrary execution. Velociraptor fails to sanitize such cells when exporting to CSV from various places such as the GUI, offline collector or data exports. It is not clear if the vulnerability is actually in Microsoft Excel treating a CSV data file as executable content, or if Velociraptor should be sanitizing the data to prevent Excel from executing it. However, since this is such a common use case for Velociraptor we decided to highlight it in an advisory.
INFO
Published Date :
Aug. 12, 2026, 10:17 a.m.
Last Modified :
Oct. 24, 2026, 4:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | 9974b330-7714-4307-a722-5648477acda7 | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Update Velociraptor to the latest version.
- Avoid exporting sensitive data as CSV.
- Manually review exported CSV files before opening.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-64955.
| URL | Resource |
|---|---|
| http://docs.velociraptor.app/announcements/advisories/cve-2026-64955/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-64955 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-64955
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-64955 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-64955 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 24, 2026
Action Type Old Value New Value Changed Translation Title: Velociraptor de Rapid7, Description: Cuyo Microsoft Excel importa un archivo CSV, ejecuta celdas que comienzan con ciertos caracteres como fórmulas, lo que otorga a dichos archivos CSV ejecución arbitraria. Velociraptor no logra sanear dichas celdas al exportar a CSV desde varios lugares, como la GUI, el recolector fuera de línea o las exportaciones de datos. No está claro si la vulnerabilidad está realmente en Microsoft Excel al tratar un archivo de datos CSV como contenido ejecutable, o si Velociraptor debería sanear los datos para evitar que Excel los ejecute. Sin embargo, dado que este es un caso de uso tan común para Velociraptor, decidimos destacarlo en un aviso. Title: Velociraptor de Rapid7, Description: Cuyo Microsoft Excel importa un archivo CSV, ejecuta celdas que comienzan con ciertos caracteres como fórmulas, lo que otorga a dichos archivos CSV ejecución arbitraria. Velociraptor no logra sanear dichas celdas al exportar a CSV desde varios lugares, como la GUI, el recolector fuera de línea o las exportaciones de datos. No está claro si la vulnerabilidad está realmente en Microsoft Excel al tratar un archivo de datos CSV como contenido ejecutable, o si Velociraptor debería sanear los datos para evitar que Excel los ejecute. Sin embargo, dado que este es un caso de uso tan común para Velociraptor, decidimos destacarlo en un aviso. -
CVE Translated by [email protected]
Oct. 23, 2026
Action Type Old Value New Value Added Translation Title: Velociraptor de Rapid7, Description: Cuyo Microsoft Excel importa un archivo CSV, ejecuta celdas que comienzan con ciertos caracteres como fórmulas, lo que otorga a dichos archivos CSV ejecución arbitraria. Velociraptor no logra sanear dichas celdas al exportar a CSV desde varios lugares, como la GUI, el recolector fuera de línea o las exportaciones de datos. No está claro si la vulnerabilidad está realmente en Microsoft Excel al tratar un archivo de datos CSV como contenido ejecutable, o si Velociraptor debería sanear los datos para evitar que Excel los ejecute. Sin embargo, dado que este es un caso de uso tan común para Velociraptor, decidimos destacarlo en un aviso. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 12, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-64955', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-12T12:29:19.765452Z'} -
New CVE Received by [email protected]
Aug. 12, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://github.com/Velocidex/velociraptor/', 'vendor': 'Rapid7', 'product': 'Velociraptor', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '0.77.2', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}] Added Description When Microsoft Excel imports a CSV file, it executes cells beginning with certain characters as formulas, giving such CSV files arbitrary execution. Velociraptor fails to sanitize such cells when exporting to CSV from various places such as the GUI, offline collector or data exports. It is not clear if the vulnerability is actually in Microsoft Excel treating a CSV data file as executable content, or if Velociraptor should be sanitizing the data to prevent Excel from executing it. However, since this is such a common use case for Velociraptor we decided to highlight it in an advisory. Added CVSS V3.1 AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N Added CWE CWE-1236 Added Reference http://docs.velociraptor.app/announcements/advisories/cve-2026-64955/