skypilot-org skypilot up to 0.12.0 User ID sky/users/server.py username.encode weak hash

Summaryinfo

A vulnerability was found in skypilot-org skypilot up to 0.12.0. It has been rated as problematic. The affected element is the function username.encode of the file sky/users/server.py of the component User ID Handler. This manipulation causes weak hash. The identification of this vulnerability is CVE-2026-13482. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. The vendor was contacted early about this disclosure.

Detailsinfo

A vulnerability was found in skypilot-org skypilot up to 0.12.0. It has been declared as problematic. Affected by this vulnerability is the function username.encode of the file sky/users/server.py of the component User ID Handler. The manipulation with an unknown input leads to a weak hash vulnerability. The CWE definition for the vulnerability is CWE-328. The product uses an algorithm that produces a digest (output value) that does not meet security expectations for a hash function that allows an adversary to reasonably determine the original input (preimage attack), find another input that can produce the same hash (2nd preimage attack), or find multiple inputs that evaluate to the same hash (birthday attack). As an impact it is known to affect integrity.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-13482. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1600.001 according to MITRE ATT&CK.

It is declared as proof-of-concept. The vendor was contacted early about this disclosure.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-39982). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• skypilot-org

Name

• skypilot

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12.0

Website

• Product: https://github.com/skypilot-org/skypilot/

CPE 2.3info

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CPE 2.2info

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Submitinfo

Accepted

• Submit #789927: skypilot-org skypilot 0.12.0 Algorithm Downgrade (by Dem0)

Be aware that VulDB is the high quality source for vulnerability data.

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