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Fencer Intel
medium 6.2

CVE-2011-4617 json

Virtualenv Allows Symlink Attack on /tmp/

published 2011-12-31 14 y ago modified 2026-06-16 4 mo ago also GHSA-3jhc-wjqf-5f2c , PYSEC-2011-23 , EUVD-2011-0025

cvss
6.2
version 3.1, GitHub
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 24%
public exploits
0
none known

Summary

virtualenv.py in virtualenv before 1.5 allows local users to overwrite arbitrary files via a symlink attack on a certain file in /tmp/.

Patch / fix

  • pypi virtualenv 1.5
  • python-virtualenv Debian 14, Debian 13, Debian 12 1.6-1

debian advisories DEBIAN-CVE-2011-4617

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-4617 updated cvss 5.0

python-virtualenv XSS

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.31% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 1.2 AV:L/AC:H/Au:N/C:N/I:P/A:N
GitHub 3.1 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected packages

ecosystem package affected fixed in
pypi virtualenv
<1.5
1.5

Classification

Weakness
  • CWE-59 Improper Link Resolution Before File Access

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.