CVE-2025-6075 (GCVE-0-2025-6075)

Vulnerability from cvelistv5 – Published: 2025-10-31 16:41 – Updated: 2026-07-31 14:01
VLAI
Title
Quadratic complexity in os.path.expandvars() with user-controlled template
Summary
If the value passed to os.path.expandvars() is user-controlled a performance degradation is possible when expanding environment variables.
Severity
1.8 (Low)
CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-31 17:54 UTC
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
PSF CNA under the mitre root
CNA scorecard B 80/100 over 28 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Python Software Foundation CPython Affected: 0 , < 3.9.25 (python)
Affected: 3.10.0 , < 3.10.20 (python)
Affected: 3.11.0 , < 3.11.15 (python)
Affected: 3.12.0 , < 3.12.13 (python)
Affected: 3.13.0 , < 3.13.10 (python)
Affected: 3.14.0 , < 3.14.1 (python)
Affected: 3.15.0a1 , < 3.15.0a2 (python)
    cpe:2.3:a:python_software_foundation:cpython:*:*:*:*:*:*:*:*
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              "value": "If the value passed to os.path.expandvars() is user-controlled a \nperformance degradation is possible when expanding environment \nvariables."
            }
          ],
          "metrics": [
            {
              "cvssV4_0": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "PRESENT",
                "attackVector": "LOCAL",
                "baseScore": 1.8,
                "baseSeverity": "LOW",
                "privilegesRequired": "HIGH",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
                "version": "4.0",
                "vulnAvailabilityImpact": "LOW",
                "vulnConfidentialityImpact": "NONE",
                "vulnIntegrityImpact": "NONE",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
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              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-07-31T14:01:32.417Z",
            "orgId": "28c92f92-d60d-412d-b760-e73465c3df22",
            "shortName": "PSF"
          },
          "references": [
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              "tags": [
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              "url": "https://github.com/python/cpython/issues/136065"
            },
            {
              "tags": [
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              ],
              "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/IUP5QJ6D4KK6ULHOMPC7DPNKRYQTQNLA/"
            },
            {
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              ],
              "url": "https://github.com/python/cpython/commit/2e6150adccaaf5bd95d4c19dfd04a36e0b325d8c"
            },
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            },
            {
              "tags": [
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              "url": "https://github.com/python/cpython/commit/c8a5f3435c342964e0a432cc9fb448b7dbecd1ba"
            },
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              "url": "https://github.com/python/cpython/commit/f029e8db626ddc6e3a3beea4eff511a71aaceb5c"
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              ],
              "url": "https://github.com/python/cpython/commit/5dceb93486176e6b4a6d9754491005113eb23427"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "Quadratic complexity in os.path.expandvars() with user-controlled template",
          "x_generator": {
            "engine": "Vulnogram 0.4.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "28c92f92-d60d-412d-b760-e73465c3df22",
        "assignerShortName": "PSF",
        "cveId": "CVE-2025-6075",
        "datePublished": "2025-10-31T16:41:34.983Z",
        "dateReserved": "2025-06-13T15:05:20.139Z",
        "dateUpdated": "2026-07-31T14:01:32.417Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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