CVE-2026-113715: virtualenv · Venv configuration readback can reinterpret path boundaries
Affects poetrySource GCVE Database
Not known to be exploited · CVSS 2.0 Low : upgrade to 2.5.1_1 when convenient.
Data as of 27 Oct 2026, 21:01 UTC
- Patch
- Available – fixed in 2.5.1_1
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
Upgrade poetry to 2.5.1_1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Homebrewpoetrypkg:brew/poetryOther 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 in virtualenv version 2.5.1_1, which rejects line-boundary characters in the destination path before environment creation and rebuilds the configuration from selected settings. Users should upgrade to version 2.5.1_1 or later to remediate this issue.
Description
A vulnerability in virtualenv's venv creator allows attacker-controlled pathnames containing Unicode line boundary characters (e.g., U+2028) to inject additional configuration keys into the pyvenv.cfg file during readback. This can alter the 'home' path and 'include-system-site-packages' setting, potentially changing the interpreter's standard library location and weakening environment isolation. The issue affects virtualenv versions from 20.0.0b1 up to but not including 2.5.1_1. A fix is available in version 2.5.1_1.
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)