CVE-2025-13327
MediumCVSS 6.3Exploitation Probability (EPSS)
Low risk8th percentile - higher than 8% of all known CVEs
Summary
A flaw was found in uv. This vulnerability allows an attacker to execute malicious code during package resolution or installation via specially crafted ZIP archives that exploit parsing differentials, requiring user interaction to install an attacker-controlled package.
Risk Assessment
If a user installs a crafted package, the attacker may execute malicious code in their environment, potentially compromising the workstation or build pipeline.
Recommendation
Update uv to a patched version and avoid installing packages from untrusted sources.
Other vulnerabilities in uv
See all- CVE-2026-114110Medium
Astral uv before 0.11.6 contains a path traversal vulnerability that allows attackers to delete arbitrary files by supplying wheels with relative traversal paths in RECORD entries. A malicious wheel can reference files outside the installation prefix.
- CVE-2026-114109High
uv before 0.11.15 contains a path traversal vulnerability that allows malicious wheels to write files outside the scripts directory via crafted console_scripts or gui_scripts entry point names. Attackers who induce users to install a malicious wheel can place executables in PATH directories, shadowing or overwriting existing binaries for code execution.
- CVE-2026-104843Medium
uv (Python package and project manager) from version 0.12.7 to 0.12.18 has a vulnerability on Windows that allows writing a file outside the installation prefix during extraction of a malicious wheel. This can place an executable in a directory on the user's PATH.
Original NVD description (English source)
A flaw was found in uv. This vulnerability allows an attacker to execute malicious code during package resolution or installation via specially crafted ZIP (Zipped Information Package) archives that exploit parsing differentials, requiring user interaction to install an attacker-controlled package.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS