CVE-2026-113725: virtualenv bash activate runs commands from an environment name with a backslash before $
Affects virtualenvSource GCVE Database
Not known to be exploited · CVSS 7.8 High : upgrade to 21.14.7 soon.
Data as of 29 Oct 2026, 14:41 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 21.14.7
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 20 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 29 Oct 2026.
What to do
Upgrade virtualenv to 21.14.7.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Bitnamivirtualenvpkg:bitnami/virtualenvOther 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
Upgrade virtualenv to version 21.14.7 or later, where the issue is fixed. No other mitigation is required as the patch fully addresses the vulnerability.
Description
A vulnerability in virtualenv prior to version 21.14.7 allows command execution via specially crafted environment names containing a backslash before a dollar sign in the bash activate script. This occurs because the script escapes the environment name improperly, leading to execution of commands in the user's shell prompt. The issue is fixed in version 21.14.7.
References
- github.com/pypa/virtualenv/commit/c3104e02474b652832a9bbaae79f6e1696296932 (opens in a new tab)
- github.com/pypa/virtualenv/releases/tag/21.14.7 (opens in a new tab)
- github.com/pypa/virtualenv/security/advisories/GHSA-vxj4-q4g9-crj7 (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-113725 (opens in a new tab)