{"id":"CVE-2026-113732","aliases":["AZL-110091","BIT-virtualenv-2026-113732","DEBIAN-CVE-2026-113732","EUVD-2026-106866","GHSA-c947-3pg5-gm8q","UBUNTU-CVE-2026-113732","openSUSE-SU-2026:12372-1"],"status":"published","title":"virtualenv activate.fish runs commands from a path or prompt with a backslash before a quote","description":"virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.2, FishActivator inherits ViaTemplateActivator.quote(), which uses POSIX shlex.quote() even though fish interprets backslashes and single quotes differently. An attacker-influenced environment path, --prompt, or VIRTUALENV_PROMPT value containing a backslash before a quote can therefore terminate the generated fish literal and execute command substitution when the user sources activate.fish. This issue is fixed in version 21.14.2.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00236,"percentile":0.148,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-116","CWE-78"],"published":"2026-10-20T22:01:23Z","modified":"2026-11-07T14:17:12Z","fixes":[{"ecosystem":"PyPI","package":"virtualenv","fixed_in":["21.14.2"],"sources":["ghsa","osv"]},{"ecosystem":"Azure Linux:3","package":"python-virtualenv","fixed_in":["20.36.1-10"],"sources":["osv"]},{"ecosystem":"Bitnami","package":"virtualenv","fixed_in":["21.14.2"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"virtualenv","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"21.14.1"},{"fixed":"21.14.2"}]}]},{"source":"osv","ecosystem":"Azure Linux:3","package":"python-virtualenv","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20.36.1-10"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"virtualenv","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"21.14.2"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"python-virtualenv","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20.17.1+ds-1","20.19.0+ds-1","20.21.0+ds-1","20.23.0+ds-1","20.23.0+ds-2","20.24.1+ds-1","20.24.6+ds-1","20.24.6+ds-2","20.25.0+ds-1","20.25.0+ds-2","20.25.1+ds-1","20.26.1+ds-1","20.26.2+ds-1","20.26.6+ds-1","20.27.0+ds-1","20.28.0+ds-1","20.29.1+ds-1","20.29.3+ds-1","20.30.0+ds-1","20.30.0+ds-2","20.30.0+ds-3","20.31.2+ds-1","20.33.1+ds-1","20.34.0+ds-1","20.35.3+ds-1","20.35.4+ds-1","20.36.1+ds-1","20.38.0+ds-1","21.2.0+ds-1","21.2.4+ds-1","21.3.1+ds-1","21.4.1+ds-1","21.5.1+ds-1"]},{"source":"osv","ecosystem":"Debian:13","package":"python-virtualenv","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20.31.2+ds-1","20.31.2+ds-1+deb13u1","20.33.1+ds-1","20.34.0+ds-1","20.35.3+ds-1","20.35.4+ds-1","20.36.1+ds-1","20.38.0+ds-1","21.2.0+ds-1","21.2.4+ds-1","21.3.1+ds-1","21.4.1+ds-1","21.5.1+ds-1"]},{"source":"osv","ecosystem":"Debian:14","package":"python-virtualenv","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20.31.2+ds-1","20.33.1+ds-1","20.34.0+ds-1","20.35.3+ds-1","20.35.4+ds-1","20.36.1+ds-1","20.38.0+ds-1","21.2.0+ds-1","21.2.4+ds-1","21.3.1+ds-1","21.4.1+ds-1","21.5.1+ds-1"]},{"source":"osv","ecosystem":"PyPI","package":"virtualenv","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"21.14.2"}]}],"versions":["0.8","0.8.1","0.8.2","0.8.3","0.8.4","0.9","0.9.1","0.9.2","1.0","1.1","1.10","1.10.1","1.11","1.11.1","1.11.2","1.11.3","1.11.4","1.11.5","1.11.6","1.2","1.3","1.3.1","1.3.2","1.3.3","1.3.4","1.4","1.4.1","1.4.2","1.4.3","1.4.4","1.4.5","1.4.6","1.4.7","1.4.8","1.4.9","1.4rc1","1.5","1.5.1","1.5.2","1.6","1.6.1","1.6.2","1.6.3","1.6.4","1.7","1.7.1","1.7.1.1","1.7.1.2","1.7.2","1.8","1.8.1","1.8.2","1.8.3","1.8.4","1.9","1.9.1","12.0","12.0.1","12.0.2","12.0.4","12.0.5","12.0.6","12.0.7","12.1.0","12.1.1","13.0.0","13.0.1","13.0.2","13.0.3","13.1.0","13.1.1","13.1.2","14.0.0","14.0.1","14.0.2","14.0.3","14.0.4","14.0.5","14.0.6","15.0.0","15.0.1","15.0.2","15.0.3","15.1.0","15.2.0","16.0.0","16.1.0","16.2.0","16.3.0","16.3.1.dev0","16.4.0","16.4.1","16.4.3","16.4.4.dev0","16.5.0","16.6.0","16.6.1","16.6.2","16.7.0","16.7.1","16.7.10","16.7.11","16.7.12","16.7.2","16.7.3","16.7.4","16.7.5","16.7.6","16.7.7","16.7.8","16.7.9","20.0.0","20.0.0b1","20.0.0b2","20.0.1","20.0.10","20.0.11","20.0.12","20.0.13","20.0.14","20.0.15","20.0.16","20.0.17","20.0.18","20.0.19","20.0.2","20.0.20","20.0.21","20.0.22","20.0.23","20.0.24","20.0.25","20.0.26","20.0.27","20.0.28","20.0.29","20.0.3","20.0.30","20.0.31","20.0.32","20.0.33","20.0.34","20.0.35","20.0.4","20.0.5","20.0.6","20.0.7","20.0.8","20.0.9","20.1.0","20.10.0","20.11.0","20.11.1","20.11.2","20.12.0","20.12.1","20.13.0","20.13.1","20.13.2","20.13.3","20.13.4","20.14.0","20.14.1","20.15.0","20.15.1","20.16.0","20.16.1","20.16.2","20.16.3","20.16.4","20.16.5","20.16.6","20.16.7","20.17.0","20.17.1","20.18.0","20.19.0","20.2.0","20.2.1","20.2.2","20.20.0","20.21.0","20.21.1","20.22.0","20.23.0","20.23.1","20.24.0","20.24.1","20.24.2","20.24.3","20.24.4","20.24.5","20.24.6","20.24.7","20.25.0","20.25.1","20.25.2","20.25.3","20.26.0","20.26.1","20.26.2","20.26.3","20.26.4","20.26.5","20.26.6","20.27.0","20.27.1","20.28.0","20.28.1","20.29.0","20.29.1","20.29.2","20.29.3","20.3.0","20.3.1","20.30.0","20.31.0","20.31.1","20.31.2","20.32.0","20.33.0","20.33.1","20.34.0","20.35.0","20.35.1","20.35.2","20.35.3","20.35.4","20.36.0","20.36.1","20.38.0","20.39.0","20.39.1","20.4.0","20.4.1","20.4.2","20.4.3","20.4.4","20.4.5","20.4.6","20.4.7","20.5.0","20.6.0","20.7.0","20.7.1","20.7.2","20.8.0","20.8.1","20.9.0","21.0.0","21.1.0","21.10.0","21.11.0","21.11.1","21.12.0","21.12.1","21.13.0","21.14.0","21.14.1","21.2.0","21.2.1","21.2.2","21.2.3","21.2.4","21.3.0","21.3.1","21.3.2","21.3.3","21.4.0","21.4.1","21.4.2","21.4.3","21.5.0","21.5.1","21.5.2","21.6.0","21.6.1","21.7.0","21.7.1","21.7.10","21.7.11","21.7.12","21.7.13","21.7.14","21.7.15","21.7.16","21.7.2","21.7.3","21.7.4","21.7.5","21.7.6","21.7.7","21.7.8","21.7.9","21.8.1","21.9.0","21.9.1"]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"python-virtualenv","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.1-1","1.11-1","1.11-2","1.11.4-1","1.11.4-1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"python-virtualenv","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.11.6+ds-1","14.0.5+ds-1","14.0.5+ds-2","14.0.5+ds-4","15.0.0+ds-1","15.0.0+ds-2","15.0.1+ds-1","15.0.1+ds-2","15.0.1+ds-3","15.0.1+ds-3ubuntu1","15.0.1+ds-3ubuntu1.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"python-virtualenv","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["15.1.0+ds-1","15.1.0+ds-1.1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"python-virtualenv","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["15.1.0+ds-2","15.1.0+ds-2build1","15.1.0+ds-2ubuntu1","20.0.13-1","20.0.17-1","20.0.17-1ubuntu0.3","20.0.17-1ubuntu0.4","20.0.17-1ubuntu0.4+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"python-virtualenv","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20.4.6+ds-2","20.10.0+ds-1","20.12.1+ds-1","20.13.0+ds-1","20.13.0+ds-2","20.13.0+ds-2ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"python-virtualenv","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20.24.1+ds-1","20.24.6+ds-1","20.24.6+ds-2","20.25.0+ds-1","20.25.0+ds-2","20.25.0+ds-2ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"python-virtualenv","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20.36.1+ds-1","21.4.1+ds-1","21.5.1+ds-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"python-virtualenv","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20.31.2+ds-1","20.35.3+ds-1","20.35.4+ds-1","20.36.1+ds-1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"python-virtualenv","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"21.15.1-1.1"}]}],"bundled":9}],"products":[{"vendor":"pypa","product":"virtualenv"}],"references":[{"url":"https://github.com/pypa/virtualenv/security/advisories/GHSA-c947-3pg5-gm8q","tags":["x_refsource_CONFIRM","web","advisory","report"]},{"url":"https://github.com/pypa/virtualenv/commit/3bddeaf8d02c3ee7f576503efb082f8f494cfcab","tags":["x_refsource_MISC","web","fix"]},{"url":"https://github.com/pypa/virtualenv/releases/tag/21.14.2","tags":["x_refsource_MISC","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113732","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-c947-3pg5-gm8q"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/113xxx/CVE-2026-113732.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-113732","tags":["advisory"]},{"url":"https://github.com/pypa/virtualenv","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2026-113732","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-113732","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-113714","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-113716","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-113718","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-113720","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-113722","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-113724","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-113726","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-113732","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-115586","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-113732","title":"virtualenv activate.fish runs commands from a path or prompt with a backslash before a quote","description":"virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.2, FishActivator inherits ViaTemplateActivator.quote(), which uses POSIX shlex.quote() even though fish interprets backslashes and single quotes differently. An attacker-influenced environment path, --prompt, or VIRTUALENV_PROMPT value containing a backslash before a quote can therefore terminate the generated fish literal and execute command substitution when the user sources activate.fish. This issue is fixed in version 21.14.2.","status":"published","published":"2026-10-20T22:01:23.931Z","modified":"2026-10-27T13:26:51.76Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-78","CWE-116"],"updated_at":"2026-11-02T13:44:29.519518Z"}],"euvd":[{"id":"EUVD-2026-106866","description":"virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.2, FishActivator inherits ViaTemplateActivator.quote(), which uses POSIX shlex.quote() even though fish interprets backslashes and single quotes differently. An attacker-influenced environment path, --prompt, or VIRTUALENV_PROMPT value containing a backslash before a quote can therefore terminate the generated fish literal and execute command substitution when the user sources activate.fish. This issue is fixed in version 21.14.2.","status":"published","published":"2026-10-20T22:01:23Z","modified":"2026-10-27T13:26:51Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:59:24.088226Z"}],"ghsa":[{"id":"GHSA-c947-3pg5-gm8q","title":"virtualenv activate.fish runs commands from a path or prompt with a backslash before a quote","description":"### Impact\n\n`FishActivator` defines no `quote()`, so it inherits `ViaTemplateActivator.quote`, which returns `shlex.quote(string)`. That function follows POSIX `sh` rules, where a backslash inside single quotes stays a literal character. fish reads `\\'` inside single quotes as an escaped quote and `\\\\` as an escaped backslash. A value with a backslash before a quote therefore ends the literal somewhere other than where `shlex.quote` put the end, and fish expands the command substitution that follows.\n\nThe environment path reaches `set -gx VIRTUAL_ENV`, and `--prompt` or `VIRTUALENV_PROMPT` reaches `set -gx VIRTUAL_ENV_PROMPT`. For `--prompt \"x\\'\\$(touch PWNED)'\\'\"`, the generated `activate.fish` contains:\n\n```fish\nset -gx VIRTUAL_ENV_PROMPT 'x\\'\"'\"'$(touch PWNED)'\"'\"'\\'\"'\"''\n```\n\n`source bin/activate.fish` runs `touch PWNED`, and fish prints no error. The same payload as a directory name runs through `VIRTUAL_ENV`. `--prompt .` takes the current directory's name, so running virtualenv inside a directory someone else named is enough. Without the backslash the payload runs nothing, and under bash it runs nothing either.\n\nvirtualenv generates `activate.fish` by default. An attacker needs to influence the environment path or prompt: a CI job or wrapper tool that passes a branch, project or job name through, or a directory in a cloned repository or unpacked archive.\n\nThe bug affects every release up to 21.14.1 that ships `activate.fish`. The GHSA-p58f-9548-mpm2 fix in 21.7.13 moved the placeholders outside their quotes but kept `shlex.quote`.\n\n### Patches\n\nFixed in 21.14.2. `activate.fish` now escapes backslashes and single quotes the way fish reads them, so the example above runs nothing and shows the prompt as given. Fix: https://github.com/pypa/virtualenv/commit/3bddeaf8d02c3ee7f576503efb082f8f494cfcab\n\n### Workarounds\n\nDo not create an environment whose path or prompt contains a backslash, and inspect `activate.fish` before you source one you did not create.\n\n### Credits\n\nKevin Stubbings (@Kwstubbs) of GitHub Security Lab reported this issue.","status":"published","published":"2026-10-21T16:39:58Z","modified":"2026-10-21T16:39:59Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-78","CWE-116"],"updated_at":"2026-11-02T14:41:33.669646Z"}],"nvd":[{"id":"CVE-2026-113732","description":"virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.2, FishActivator inherits ViaTemplateActivator.quote(), which uses POSIX shlex.quote() even though fish interprets backslashes and single quotes differently. An attacker-influenced environment path, --prompt, or VIRTUALENV_PROMPT value containing a backslash before a quote can therefore terminate the generated fish literal and execute command substitution when the user sources activate.fish. This issue is fixed in version 21.14.2.","status":"published","published":"2026-10-20T22:19:30.413Z","modified":"2026-10-27T14:16:33.643Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-78","CWE-116"],"updated_at":"2026-11-02T14:13:01.751479Z"}],"osv":[{"id":"CVE-2026-113732","title":"virtualenv activate.fish runs commands from a path or prompt with a backslash before a quote","description":"virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.2, FishActivator inherits ViaTemplateActivator.quote(), which uses POSIX shlex.quote() even though fish interprets backslashes and single quotes differently. An attacker-influenced environment path, --prompt, or VIRTUALENV_PROMPT value containing a backslash before a quote can therefore terminate the generated fish literal and execute command substitution when the user sources activate.fish. This issue is fixed in version 21.14.2.","status":"published","published":"2026-10-20T22:01:23.931Z","modified":"2026-11-11T10:47:23.882500405Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-116","CWE-78"],"updated_at":"2026-11-11T03:22:00.901153Z"},{"id":"DEBIAN-CVE-2026-113732","description":"virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.2, FishActivator inherits ViaTemplateActivator.quote(), which uses POSIX shlex.quote() even though fish interprets backslashes and single quotes differently. An attacker-influenced environment path, --prompt, or VIRTUALENV_PROMPT value containing a backslash before a quote can therefore terminate the generated fish literal and execute command substitution when the user sources activate.fish. This issue is fixed in version 21.14.2.","status":"published","published":"2026-10-20T22:19:30.413Z","modified":"2026-10-28T09:47:53.769204164Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:50.923612Z"},{"id":"GHSA-c947-3pg5-gm8q","title":"virtualenv activate.fish runs commands from a path or prompt with a backslash before a quote","description":"### Impact\n\n`FishActivator` defines no `quote()`, so it inherits `ViaTemplateActivator.quote`, which returns `shlex.quote(string)`. That function follows POSIX `sh` rules, where a backslash inside single quotes stays a literal character. fish reads `\\'` inside single quotes as an escaped quote and `\\\\` as an escaped backslash. A value with a backslash before a quote therefore ends the literal somewhere other than where `shlex.quote` put the end, and fish expands the command substitution that follows.\n\nThe environment path reaches `set -gx VIRTUAL_ENV`, and `--prompt` or `VIRTUALENV_PROMPT` reaches `set -gx VIRTUAL_ENV_PROMPT`. For `--prompt \"x\\'\\$(touch PWNED)'\\'\"`, the generated `activate.fish` contains:\n\n```fish\nset -gx VIRTUAL_ENV_PROMPT 'x\\'\"'\"'$(touch PWNED)'\"'\"'\\'\"'\"''\n```\n\n`source bin/activate.fish` runs `touch PWNED`, and fish prints no error. The same payload as a directory name runs through `VIRTUAL_ENV`. `--prompt .` takes the current directory's name, so running virtualenv inside a directory someone else named is enough. Without the backslash the payload runs nothing, and under bash it runs nothing either.\n\nvirtualenv generates `activate.fish` by default. An attacker needs to influence the environment path or prompt: a CI job or wrapper tool that passes a branch, project or job name through, or a directory in a cloned repository or unpacked archive.\n\nThe bug affects every release up to 21.14.1 that ships `activate.fish`. The GHSA-p58f-9548-mpm2 fix in 21.7.13 moved the placeholders outside their quotes but kept `shlex.quote`.\n\n### Patches\n\nFixed in 21.14.2. `activate.fish` now escapes backslashes and single quotes the way fish reads them, so the example above runs nothing and shows the prompt as given. Fix: https://github.com/pypa/virtualenv/commit/3bddeaf8d02c3ee7f576503efb082f8f494cfcab\n\n### Workarounds\n\nDo not create an environment whose path or prompt contains a backslash, and inspect `activate.fish` before you source one you did not create.\n\n### Credits\n\nKevin Stubbings (@Kwstubbs) of GitHub Security Lab reported this issue.","status":"published","published":"2026-10-21T16:39:58Z","modified":"2026-10-29T10:55:30.348006947Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-116","CWE-78"],"updated_at":"2026-11-02T15:46:44.927642Z"},{"id":"UBUNTU-CVE-2026-113732","description":"virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.2, FishActivator inherits ViaTemplateActivator.quote(), which uses POSIX shlex.quote() even though fish interprets backslashes and single quotes differently. An attacker-influenced environment path, --prompt, or VIRTUALENV_PROMPT value containing a backslash before a quote can therefore terminate the generated fish literal and execute command substitution when the user sources activate.fish. This issue is fixed in version 21.14.2.","status":"published","published":"2026-10-20T22:19:00Z","modified":"2026-10-28T20:17:44.865394437Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:55:59.591851Z"},{"id":"AZL-110091","title":"CVE-2026-113732 affecting package python-virtualenv for versions less than 20.36.1-10","description":"virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.2, FishActivator inherits ViaTemplateActivator.quote(), which uses POSIX shlex.quote() even though fish interprets backslashes and single quotes differently. An attacker-influenced environment path, --prompt, or VIRTUALENV_PROMPT value containing a backslash before a quote can therefore terminate the generated fish literal and execute command substitution when the user sources activate.fish. This issue is fixed in version 21.14.2.","status":"published","published":"2026-10-20T22:19:30Z","modified":"2026-11-07T14:17:12.588562212Z","updated_at":"2026-11-07T14:48:11.583685Z"},{"id":"BIT-virtualenv-2026-113732","title":"virtualenv activate.fish runs commands from a path or prompt with a backslash before a quote","description":"virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.2, FishActivator inherits ViaTemplateActivator.quote(), which uses POSIX shlex.quote() even though fish interprets backslashes and single quotes differently. An attacker-influenced environment path, --prompt, or VIRTUALENV_PROMPT value containing a backslash before a quote can therefore terminate the generated fish literal and execute command substitution when the user sources activate.fish. This issue is fixed in version 21.14.2.","status":"published","published":"2026-10-29T09:00:45.098Z","modified":"2026-10-29T10:55:30.348006947Z","updated_at":"2026-11-02T15:28:36.104787Z"},{"id":"openSUSE-SU-2026:12372-1","title":"python313-virtualenv-21.15.1-1.1 on GA media","description":"These are all security issues fixed in the python313-virtualenv-21.15.1-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-10-30T00:00:00Z","modified":"2026-10-31T18:00:07.440229022Z","updated_at":"2026-11-02T16:58:41.463445Z"}]}}