CVE-2026-102937

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Source
https://cve.org/CVERecord?id=CVE-2026-102937
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102937.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-102937
Aliases
Downstream
AZL (2)
CGA (6)
CLSA (1)
DEBIAN (1)
ECHO (1)
MINI (2)
ROOT (1)
UBUNTU (1)
Published
2026-09-29T20:56:13Z
Modified
2026-10-21T02:54:29Z
Severity
  • 7.3 (High) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
virtualenv: Command injection via --prompt in activate.bat (batch activator)
Details

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.12, BatchActivator.quote() returns prompt text unchanged before activate.bat inserts it into a cmd.exe set "VAR=value" statement. An attacker who influences --prompt, VIRTUALENV_PROMPT, or the corresponding configuration value can include a double quote that closes the assignment and leaves following cmd.exe operators as executable syntax. When a user activates the generated Windows environment, the injected commands run with that user's privileges. This issue is fixed in version 21.7.12.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-78"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102937.json"
}
References

Affected packages

Git / github.com/pypa/virtualenv

Affected ranges

Type
GIT
Repo
https://github.com/pypa/virtualenv
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
9666b42afc8d6103e765d77958d7bae782f5406e
Fixed
d721ff140ce4afdc2a9b76751e4584e25d9fbea6
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "21.7.12"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "d721ff140ce4afdc2a9b76751e4584e25d9fbea6"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "21.7.12",
            "range":  [
                {
                    "fixed":  "9666b42afc8d6103e765d77958d7bae782f5406e"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

20.*
20.0.0b1
20.0.0b2
20.0.32
20.0.7
20.24.3
20.27.2
20.27.3
20.3.0
20.37.0
20.38.0
20.39.0
20.39.1
21.*
21.0.0
21.1.0
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
21.7.2
21.7.3
21.7.4
21.7.5
21.7.6
21.7.7
21.7.8
21.7.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102937.json"