CVE-2026-5271
Last modified
CVE-2026-5271 is a medium-severity vulnerability rated 5.6/10 on the CVSS scale. pymanager included the current working directory in sys.path meaning modules could be shadowed by modules in the current working directory. As a result, if a user executes a pymanager-generated command (e.g., pip, pytest) from an attacker-controlled directory, a malicious module in that directory can be imported and executed instead of the intended package.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.
Description
pymanager included the current working directory in sys.path meaning modules could be shadowed by modules in the current working directory. As a result, if a user executes a pymanager-generated command (e.g., pip, pytest) from an attacker-controlled directory, a malicious module in that directory can be imported and executed instead of the intended package.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Python | Pymanager | 26.0 |
References
- https://github.com/python/pymanager/security/advisories/GHSA-jr5x-hgm4-rrm6Exploit, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2026/04/01/5Mailing List, Third Party Advisory
- https://github.com/python/pymanager/security/advisories/GHSA-jr5x-hgm4-rrm6Exploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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