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Conda Constructor Command Injection via Unsanitized User Input (Low)

Type: advisorySources: OSV

(conda) Constructor is a tool which allows constructing an installer for a collection of conda packages. Prior to version 3.11.3, shell installer scripts process the installation prefix (user_prefix) using an eval statement, which executes unsanitized user input as shell code. Although the script runs with user privileges (not root), an attacker could exploit this by injecting arbitrary commands through a malicious path during installation. Exploitation requires explicit user action. This issue has been patched in version 3.11.3.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2025-49823
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 01:47 UTC · Revision 1

Source evidence

Conda Constructor Command Injection via Unsanitized User Input (Low)

core-osv · Original source

Published 17 Jun 2025, 02:21 UTC

(conda) Constructor is a tool which allows constructing an installer for a collection of conda packages. Prior to version 3.11.3, shell installer scripts process the installation prefix (user_prefix) using an eval statement, which executes unsanitized user input as shell code. Although the script runs with user privileges (not root), an attacker could exploit this by injecting arbitrary commands through a malicious path during installation. Exploitation requires explicit user action. This issue has been patched in version 3.11.3.

osv:CVE-2025-49823
Complete source record
{
  "id": "1988598b62ee6119a3e5d86c6a58198218ecc27ac35e7461c9be196ddda28650",
  "url": "https://osv.dev/vulnerability/CVE-2025-49823",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Conda Constructor Command Injection via Unsanitized User Input (Low)",
    "summary": "(conda) Constructor is a tool which allows constructing an installer for a collection of conda packages. Prior to version 3.11.3, shell installer scripts process the installation prefix (user_prefix) using an eval statement, which executes unsanitized user input as shell code. Although the script runs with user privileges (not root), an attacker could exploit this by injecting arbitrary commands through a malicious path during installation. Exploitation requires explicit user action. This issue has been patched in version 3.11.3.",
    "evidence": "osv:CVE-2025-49823",
    "products": [],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2025-49823",
      "aliases": [
        "CVE-2025-49823",
        "GHSA-44q9-rg2q-5g99"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:C/C:N/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/conda/constructor",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "e9360f1d975c33f5e2f14234a4c86ee0d43c0ad1"
                },
                {
                  "fixed": "ce4c2d58cfcde2f62d038fb8aba013176c77a0b1"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.11.3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "ce4c2d58cfcde2f62d038fb8aba013176c77a0b1"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.11.2",
            "3.11.1",
            "3.11.0",
            "3.10.0",
            "3.9.3",
            "3.9.2",
            "3.9.1",
            "3.9.0",
            "3.8.1",
            "3.8.0",
            "3.7.0",
            "3.6.0",
            "3.5.0",
            "3.4.5",
            "3.4.4",
            "3.4.3",
            "3.4.2",
            "3.4.1",
            "3.4.0",
            "3.3.1",
            "3.3.0",
            "3.2.2",
            "3.2.1",
            "3.2.0",
            "3.1.0",
            "3.0.2",
            "3.0.1",
            "3.0.0",
            "2.3.0",
            "2.2.0",
            "2.1.1",
            "2.1.0",
            "2.0.3",
            "2.0.2",
            "2.0.1",
            "2.0.0",
            "1.7.0",
            "1.5.5",
            "1.5.4",
            "1.5.3",
            "1.5.2",
            "1.5.1",
            "1.5.0",
            "1.4.2",
            "1.4.1",
            "1.4.0",
            "1.3.4",
            "1.3.3",
            "1.3.2",
            "1.3.1",
            "1.3.0",
            "1.2.1",
            "1.2.0",
            "1.1.0",
            "1.0.0",
            "0.9.3",
            "0.9.2",
            "0.9.1",
            "0.9.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-49823.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.551183699Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/49xxx/CVE-2025-49823.json",
        "https://github.com/conda/constructor/security/advisories/GHSA-44q9-rg2q-5g99",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-49823",
        "https://github.com/conda/constructor/commit/ce4c2d58cfcde2f62d038fb8aba013176c77a0b1"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-77"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/49xxx/CVE-2025-49823.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-49823",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 499484,
  "published_at": "2025-06-17T02:21:17.496+00:00"
}