CVE-2024-40647: Sentry sdk Sentry's Python SDK Unintentionally Exposes Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-g92j-qhmh-64v2",
  "modified" : "2026-06-01T09:31:10Z",
  "published" : "2024-07-18T17:18:46Z",
  "aliases" : [ "CVE-2024-40647" ],
  "summary" : "Sentry's Python SDK unintentionally exposes environment variables to subprocesses",
  "details" : "### Impact\n\nThe bug in Sentry's Python SDK <2.8.0 results in the unintentional exposure of environment variables to subprocesses despite the `env={}` setting.\n\n### Details\n\nIn Python's `subprocess` calls, all environment variables are passed to subprocesses by default. However, if you specifically do not want them to be passed to subprocesses, you may use `env` argument in `subprocess` calls, like in this example:\n\n```\n>>> subprocess.check_output([\"env\"], env={\"TEST\":\"1\"})\nb'TEST=1\\n'\n```\n\nIf you'd want to not pass any variables, you can set an empty dict:\n\n```\n>>> subprocess.check_output([\"env\"], env={})\nb''\n```\n\nHowever, the bug in Sentry SDK <2.8.0 causes **all environment variables** to be passed to the subprocesses when `env={}` is set, unless the Sentry SDK's [Stdlib](https://docs.sentry.io/platforms/python/integrations/default-integrations/#stdlib) integration is disabled. The Stdlib integration is enabled by default.\n\n### Patches\nThe issue has been patched in https://github.com/getsentry/sentry-python/pull/3251 and the fix released in [sentry-sdk==2.8.0](https://github.com/getsentry/sentry-python/releases/tag/2.8.0). The fix was also backported to [sentry-sdk==1.45.1](https://github.com/getsentry/sentry-python/releases/tag/1.45.1).\n\n### Workarounds\n\nWe strongly recommend upgrading to the latest SDK version. However, if it's not possible, and if passing environment variables to child processes poses a security risk for you, there are two options:\n\n1. In your application, replace `env={}` with the minimal dict `env={\"EMPTY_ENV\":\"1\"}` or similar.\n\nOR\n\n2. Disable Stdlib integration:\n```\nimport sentry_sdk\n\n# Should go before sentry_sdk.init\nsentry_sdk.integrations._DEFAULT_INTEGRATIONS.remove(\"sentry_sdk.integrations.stdlib.StdlibIntegration\")\n\nsentry_sdk.init(...)\n```\n\n### References\n* Sentry docs: [Default integrations](https://docs.sentry.io/platforms/python/integrations/default-integrations/)\n* Python docs: [subprocess module](https://docs.python.org/3/library/subprocess.html)\n* Patch https://github.com/getsentry/sentry-python/pull/3251",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "sentry-sdk"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.0.0a1"
      }, {
        "fixed" : "2.8.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "sentry-sdk"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.45.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/getsentry/sentry-python/security/advisories/GHSA-g92j-qhmh-64v2"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-40647"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/getsentry/sentry-python/pull/3251"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/getsentry/sentry-python/commit/763e40aa4cb57ecced467f48f78f335c87e9bdff"
  }, {
    "type" : "WEB",
    "url" : "https://docs.python.org/3/library/subprocess.html"
  }, {
    "type" : "WEB",
    "url" : "https://docs.sentry.io/platforms/python/integrations/default-integrations"
  }, {
    "type" : "WEB",
    "url" : "https://docs.sentry.io/platforms/python/integrations/default-integrations/#stdlib"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/getsentry/sentry-python"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/getsentry/sentry-python/releases/tag/1.45.1"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/getsentry/sentry-python/releases/tag/2.8.0"
  }, {
    "type" : "WEB",
    "url" : "https://lists.debian.org/debian-lts-announce/2026/06/msg00001.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-07-18T17:18:46Z",
    "nvd_published_at" : "2024-07-18T17:15:05Z"
  }
}