CVE-2026-113715: virtualenv · Venv configuration readback can reinterpret path boundaries
Affects charm-toolsSource GCVE Database
Not known to be exploited · CVSS 2.0 Low.
Data as of 27 Oct 2026, 06:17 UTC
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 20 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Homebrewcharm-toolspkg:brew/charm-toolsOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available as implemented in virtualenv pull request #3426, which rejects line-boundary characters in the destination path before environment creation and rebuilds the configuration from selected settings to prevent injection. Users should upgrade to a version of virtualenv that includes this fix. No additional mitigation is required if the fixed version is used.
Description
CVE-2026-113715 is a low-severity vulnerability in virtualenv's venv creator configuration readback. The issue arises because virtualenv reads the standard library's pyvenv.cfg file using splitlines(), which treats certain Unicode line-boundary characters (e.g., U+2028) as line breaks. An attacker-controlled destination path containing such characters can inject additional configuration keys, altering environment settings like 'home' and 'include-system-site-packages'. This can change which standard-library files the interpreter loads and weaken environment isolation. The vulnerability requires using the venv creator in virtualenv and an attacker-controlled destination path with line-boundary characters. A fix was introduced in pull request #3426, which rejects line-boundary characters before creation and rebuilds the configuration from selected settings.
References
- github.com/pypa/virtualenv/security/advisories/GHSA-qmx5-4p3x-wvqf (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-113715 (opens in a new tab)
- github.com/pypa/virtualenv/pull/3426 (opens in a new tab)
- github.com/pypa/virtualenv/commit/b0008a58885ded9227faf8f910c6c402712c750a (opens in a new tab)
- github.com/pypa/virtualenv (opens in a new tab)
- github.com/pypa/virtualenv/releases/tag/21.14.9 (opens in a new tab)