Vulnerability · Published Aug 8, 2025 · Assigned by GitHub_M
CVE-2025-54368uv is vulnerable to ZIP payload obfuscation through parsing differentials
Medium 6.8
In plain English
A medium-severity improper input validation in uv from astral-sh. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
uv is a Python package and project manager written in Rust. In versions 0.8.5 and earlier, remote ZIP archives were handled in a streamwise fashion, and file entries were not reconciled against the archive's central directory. An attacker could contrive a ZIP archive that would extract with legitimate contents on some package installers, and malicious contents on others due to multiple local file entries. An attacker could also contrive a "stacked" ZIP input with multiple internal ZIPs, which would be handled differently by different package installers. The attacker could choose which installer to target in both scenarios. This issue is fixed in version 0.8.6. To work around this issue, users may choose to set UV_INSECURE_NO_ZIP_VALIDATION=1 to revert to the previous behavior.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | uv | 0.8.6 | GHSA-8qf3-x8v5-2pj8 |
| PyPI | uv | 0.8.6 | PYSEC-2026-2001 |
Affected products (as reported)
Weakness: CWE-436, CWE-20 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
References
- https://github.com/astral-sh/uv/security/advisories/GHSA-8qf3-x8v5-2pj8 x_refsource_CONFIRM
- https://github.com/astral-sh/uv/commit/7f1eaf48c193e045ca2c62c4581048765c55505f x_refsource_MISC
- https://astral.sh/blog/uv-security-advisory-cve-2025-54368 x_refsource_MISC
- https://blog.pypi.org/posts/2025-08-07-wheel-archive-confusion-attacks x_refsource_MISC