CVE-2026-113776

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Source
https://cve.org/CVERecord?id=CVE-2026-113776
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-113776.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-113776
Aliases
Downstream
CGA (8)
ECHO (1)
Published
2026-10-20T22:03:18Z
Modified
2026-10-21T10:45:26Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
virtualenv activation scripts run code from a path that contains a placeholder name
Details

virtualenv is a tool for creating isolated virtual python environments. From 20.26.6 until 21.14.2, ViaTemplateActivator.instantiate_template() replaces placeholders one key at a time across the complete activation template, so trigger names such as VIRTUAL_NAME, VIRTUAL_ENV, or VIRTUAL_PROMPT inside an already substituted and quoted environment path or prompt can be replaced during a later pass. The later value's quoting can close the earlier literal and execute the remaining path when a user activates the environment through bash, fish, xonsh, or activate_this.py. The distinct csh prompt-display token VIRTUAL_PROMPT_DISPLAY_TCSH can instead break the generated script without establishing command execution. The attacker must influence the destination path or --prompt, and a value without a relevant placeholder name does not trigger this mechanism. This issue is fixed in version 21.14.2.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-78",
        "CWE-94"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/113xxx/CVE-2026-113776.json"
}
References

Affected packages

Git / github.com/pypa/virtualenv

Affected ranges

Type
GIT
Repo
https://github.com/pypa/virtualenv
Events
Introduced
ec04726d065372ffad9920998aef1ce41252a61d
Fixed
a6bdda0220f664c04042f063bd7344f800934559
Fixed
602b26623a724827ff171bf11fef4ad186d01f74
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "20.26.6"
                },
                {
                    "fixed":  "21.14.2"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "602b26623a724827ff171bf11fef4ad186d01f74"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "21.14.2",
            "range":  [
                {
                    "fixed":  "a6bdda0220f664c04042f063bd7344f800934559"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-113776.json"