CVE-2026-105801 (GCVE-0-2026-105801)

Vulnerability from cvelistv5 – Published: 2026-10-06 14:53 – Updated: 2026-10-06 14:53
VLAI
Title
openapi-python-client: Malicious OpenAPI Documents can cause Arbitrary Code Generation
Summary
openapi-python-client generates Python clients from OpenAPI documents. Prior to 0.29.1, the generator does not safely neutralize malicious OpenAPI document content before rendering string, docstring, and f-string contexts in generated Python. The generated Python client can contain attacker-controlled Python that executes when a user imports the client, affecting the importing environment's integrity and potentially its confidentiality and availability. This issue is fixed in version 0.29.1.
Severity
8.4 (High)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H
CWE
  • CWE-94 - Improper Control of Generation of Code ('Code Injection')
  • CWE-116 - Improper Encoding or Escaping of Output
  • CWE-150 - Improper Neutralization of Escape, Meta, or Control Sequences
Assigner
References
Impacted products
Vendor Product Version CPE status
openapi-generators openapi-python-client Affected: < 0.29.1
guessed Create a notification for this product.
Show details on NVD website
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        }
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              "cweId": "CWE-94",
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        {
          "descriptions": [
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              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
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              "lang": "en",
              "type": "CWE"
            }
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      "providerMetadata": {
        "dateUpdated": "2026-10-06T14:53:42.461Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
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          "name": "https://github.com/openapi-generators/openapi-python-client/security/advisories/GHSA-5293-mq8x-g3xj",
          "tags": [
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          "url": "https://github.com/openapi-generators/openapi-python-client/security/advisories/GHSA-5293-mq8x-g3xj"
        },
        {
          "name": "https://github.com/openapi-generators/openapi-python-client/pull/1483",
          "tags": [
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          "url": "https://github.com/openapi-generators/openapi-python-client/pull/1483"
        },
        {
          "name": "https://github.com/openapi-generators/openapi-python-client/commit/1c99af478892e5bbe6583b92acba431c9dec9186",
          "tags": [
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          "url": "https://github.com/openapi-generators/openapi-python-client/commit/1c99af478892e5bbe6583b92acba431c9dec9186"
        },
        {
          "name": "https://github.com/openapi-generators/openapi-python-client/releases/tag/v0.29.1",
          "tags": [
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          "url": "https://github.com/openapi-generators/openapi-python-client/releases/tag/v0.29.1"
        }
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      "source": {
        "advisory": "GHSA-5293-mq8x-g3xj",
        "discovery": "UNKNOWN"
      },
      "title": "openapi-python-client: Malicious OpenAPI Documents can cause Arbitrary Code Generation"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-105801",
    "datePublished": "2026-10-06T14:53:42.461Z",
    "dateReserved": "2026-10-05T20:37:19.364Z",
    "dateUpdated": "2026-10-06T14:53:42.461Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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      "date": "2026-10-07",
      "epss": "0.00139",
      "percentile": "0.02765"
    },
    "nvd": {
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                "product": "openapi-python-client",
                "vendor": "openapi-generators",
                "versions": [
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                    "version": "\u003c 0.29.1"
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        "cveTags": [],
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            "lang": "en",
            "value": "openapi-python-client generates Python clients from OpenAPI documents. Prior to 0.29.1, the generator does not safely neutralize malicious OpenAPI document content before rendering string, docstring, and f-string contexts in generated Python. The generated Python client can contain attacker-controlled Python that executes when a user imports the client, affecting the importing environment\u0027s integrity and potentially its confidentiality and availability. This issue is fixed in version 0.29.1."
          }
        ],
        "id": "CVE-2026-105801",
        "lastModified": "2026-10-06T16:08:43.180",
        "metrics": {
          "cvssMetricV40": [
            {
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                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
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                "attackVector": "LOCAL",
                "availabilityRequirement": "NOT_DEFINED",
                "baseScore": 8.4,
                "baseSeverity": "HIGH",
                "confidentialityRequirement": "NOT_DEFINED",
                "exploitMaturity": "NOT_DEFINED",
                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "HIGH",
                "subConfidentialityImpact": "HIGH",
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                "userInteraction": "PASSIVE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
                "version": "4.0",
                "vulnAvailabilityImpact": "NONE",
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                "vulnerabilityResponseEffort": "NOT_DEFINED"
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              "type": "Secondary"
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        "published": "2026-10-06T15:17:17.320",
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        "vulnStatus": "Deferred",
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                "value": "CWE-94"
              },
              {
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                "value": "CWE-116"
              },
              {
                "lang": "en",
                "value": "CWE-150"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
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    },
    "redhat_vex": {
      "current_release_date": "2026-10-07T11:10:41+00:00",
      "cve": "CVE-2026-105801",
      "id": "CVE-2026-105801",
      "initial_release_date": "2026-10-06T14:53:42.461000+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "openapi-python-client: openapi-python-client: Arbitrary code execution via crafted OpenAPI documents",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-105801.json",
      "version": "3"
    }
  }
}



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Nomenclature

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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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