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Case File

CVE-2011-1521

MEDIUM · CVSS 6.4 EPSS 4.10%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2011-05-24 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.4. It may be remotely exploitable. It may lead to a denial-of-service condition.

CVE
CVE-2011-1521
Severity
MEDIUM
CVSS
6.4
EPSS
4.10%

Original NVD Description

The urllib and urllib2 modules in Python 2.x before 2.7.2 and 3.x before 3.2.1 process Location headers that specify redirection to file: URLs, which makes it easier for remote attackers to obtain sensitive information or cause a denial of service (resource consumption) via a crafted URL, as demonstrated by the file:///etc/passwd and file:///dev/zero URLs.