CVE-2026-8387
Relative Path Traversal in allegroai/clearml
Description
A vulnerability in allegroai/clearml versions up to and including 1.16.5 allows for relative path traversal when extracting `.zip` archives using the `ZipFile.extractall()` method in `StorageManager._extract_to_cache()`. This issue arises due to the lack of path traversal validation, enabling an attacker to write arbitrary files to the filesystem. Attack vectors include dataset downloads, artifact downloads, model downloads, and offline session imports. The vulnerability can lead to remote code execution through methods such as cron job injection, SSH key overwrite, or web shell deployment. The issue is resolved in version 2.1.6.
INFO
Published Date :
July 1, 2026, 1:17 p.m.
Last Modified :
Oct. 25, 2026, 5:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-8387
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.0 | LOW | [email protected] |
Solution
- Update allegroai/clearml to version 2.1.6 or later.
- Verify archive extraction process for path traversal vulnerabilities.
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-2026-8387.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-8387 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-2026-8387
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-2026-8387 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-8387 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. 25, 2026
Action Type Old Value New Value Added Translation Title: allegroai/clearml de allegroai, Description: Una vulnerabilidad en las versiones de allegroai/clearml hasta la 1.16.5 inclusive permite el salto de ruta relativo al extraer archivos ’.zip’ utilizando el método “ZipFile.extractall()” en “StorageManager._extract_to_cache()”. Este problema surge debido a la falta de validación de salto de ruta, lo que permite a un atacante escribir archivos arbitrarios en el sistema de archivos. Los vectores de ataque incluyen descargas de conjuntos de datos, descargas de artefactos, descargas de modelos e importaciones de sesiones sin conexión. La vulnerabilidad puede conducir a la ejecución remota de código a través de métodos como la inyección de tareas cron, la sobrescritura de claves SSH o el despliegue de web shells. El problema está resuelto en la versión 2.1.6. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 01, 2026
Action Type Old Value New Value Added Reference https://huntr.com/bounties/0f69bb0b-728e-411c-8676-8f2dfaf238db Added SSVC {'id': 'CVE-2026-8387', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-01T13:35:58.388421Z'} -
New CVE Received by [email protected]
Jul. 01, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'allegroai', 'product': 'allegroai/clearml', 'versions': [{'status': 'affected', 'version': 'unspecified', 'lessThan': '2.1.6', 'versionType': 'custom'}]}] Added Description A vulnerability in allegroai/clearml versions up to and including 1.16.5 allows for relative path traversal when extracting `.zip` archives using the `ZipFile.extractall()` method in `StorageManager._extract_to_cache()`. This issue arises due to the lack of path traversal validation, enabling an attacker to write arbitrary files to the filesystem. Attack vectors include dataset downloads, artifact downloads, model downloads, and offline session imports. The vulnerability can lead to remote code execution through methods such as cron job injection, SSH key overwrite, or web shell deployment. The issue is resolved in version 2.1.6. Added CVSS V3 AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N Added CWE CWE-23 Added Reference https://github.com/allegroai/clearml/commit/4fd611c564256e4f294a6db133705120f203f476 Added Reference https://huntr.com/bounties/0f69bb0b-728e-411c-8676-8f2dfaf238db