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| purl | pkg:pypi/virtualenv@1.3.1 |
| Vulnerability | Summary | Fixed by |
|---|---|---|
|
VCID-5gxd-gbyg-ebg7
Aliases: CVE-2026-22702 GHSA-597g-3phw-6986 |
virtualenv Has TOCTOU Vulnerabilities in Directory Creation ## Impact TOCTOU (Time-of-Check-Time-of-Use) vulnerabilities in `virtualenv` allow local attackers to perform symlink-based attacks on directory creation operations. An attacker with local access can exploit a race condition between directory existence checks and creation to redirect virtualenv's app_data and lock file operations to attacker-controlled locations. **Affected versions:** All versions up to and including 20.36.1 **Affected users:** Any user running `virtualenv` on multi-user systems where untrusted local users have filesystem access to shared temporary directories or where `VIRTUALENV_OVERRIDE_APP_DATA` points to a user-writable location. **Attack scenarios:** - Cache poisoning: Attacker corrupts wheels or Python metadata in the cache - Information disclosure: Attacker reads sensitive cached data or metadata - Lock bypass: Attacker controls lock file semantics to cause concurrent access violations - Denial of service: Lock starvation preventing virtualenv operations ## Patches The vulnerability has been patched by replacing check-then-act patterns with atomic `os.makedirs(..., exist_ok=True)` operations. **Fixed in:** PR #3013 **Versions with the fix:** 20.36.2 and later Users should upgrade to version 20.36.2 or later. ## Workarounds If you cannot upgrade immediately: 1. Ensure `VIRTUALENV_OVERRIDE_APP_DATA` points to a directory owned by the current user with restricted permissions (mode 0700) 2. Avoid running `virtualenv` in shared temporary directories where other users have write access 3. Use separate user accounts for different projects to isolate app_data directories ## References - GitHub PR: https://github.com/pypa/virtualenv/pull/3013 - Vulnerability reported by: @tsigouris007 - CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization (TOCTOU) - CWE-59: Improper Link Resolution Before File Access |
Affected by 0 other vulnerabilities. |
|
VCID-6crp-q47m-w7dh
Aliases: CVE-2011-4617 GHSA-3jhc-wjqf-5f2c PYSEC-2011-23 |
virtualenv.py in virtualenv before 1.5 allows local users to overwrite arbitrary files via a symlink attack on a certain file in /tmp/. |
Affected by 2 other vulnerabilities. |
|
VCID-yjph-enuc-wkc7
Aliases: BIT-virtualenv-2024-53899 CVE-2024-53899 GHSA-rqc4-2hc7-8c8v PYSEC-2024-187 |
virtualenv before 20.26.6 allows command injection through the activation scripts for a virtual environment. Magic template strings are not quoted correctly when replacing. NOTE: this is not the same as CVE-2024-9287. |
Affected by 1 other vulnerability. |
| Vulnerability | Summary | Aliases |
|---|---|---|
| This package is not known to fix vulnerabilities. | ||