Bug 2545243 (CVE-2026-104843)

Summary: CVE-2026-104843 uv: uv: Arbitrary code execution via malicious package extraction on Windows
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: alinfoot, anpicker, aprice, bbrownin, dtrifiro, ebourniv, gbenhaim, hasun, ilpinto, jfula, jowilson, jsamir, ltomasbo, niyer, nyancey, oezr, ometelka, ptisnovs, sbunciak, syedriko, twaugh, weaton, xdharmai, ykashtan
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in uv. An attacker could achieve arbitrary code execution on a Windows system by tricking a user into installing a specially crafted Python wheel package. During archive extraction, files can be written outside the intended target directory, allowing an attacker to place malicious executable files into locations within the system search path (PATH).
 Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-10-02 15:52:16 UTC 
uv is a Python package and project manager written in Rust. From 0.12.7 until 0.12.18, uv wheel extraction on Windows can process a malicious wheel in a way that writes a file outside the installation prefix, including an executable in a directory already present on the user's PATH. Non-Windows hosts are not affected. This issue is fixed in version 0.12.18.