Vulnerability · Published Feb 27, 2026 · Assigned by redhat
CVE-2025-13327Uv: uv: specially crafted zip archives lead to arbitrary code execution due to parsing differentials
Medium 6.3
In plain English
A medium-severity security flaw 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 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.3Medium
Exploit odds (30 days)0.2%top 91.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | uv | 0.9.6 | GHSA-pqhf-p39g-3x64 |
| PyPI | uv | 0.9.6 | PYSEC-2026-2295 |
Affected products (as reported)
Weakness: CWE-1286 · Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
References
- RHSA-2026:91219 vendor-advisory, x_refsource_REDHAT
- RHSA-2026:91232 vendor-advisory, x_refsource_REDHAT
- RHSA-2026:91236 vendor-advisory, x_refsource_REDHAT
- RHSA-2026:94459 vendor-advisory, x_refsource_REDHAT
- RHSA-2026:94476 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2025-13327 vdb-entry, x_refsource_REDHAT
- RHBZ#2407263 issue-tracking, x_refsource_REDHAT
- https://github.com/astral-sh/uv
- https://github.com/astral-sh/uv/commit/da659fee4898a73dbc75070f3e82d49f745e4628
- https://github.com/astral-sh/uv/security/advisories/GHSA-pqhf-p39g-3x64