{"id":"PYSEC-2026-1917","summary":"Sentry's Python SDK unintentionally exposes environment variables to subprocesses","details":"### Impact\n\nThe bug in Sentry's Python SDK \u003c2.8.0 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\u003e\u003e\u003e 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\u003e\u003e\u003e subprocess.check_output([\"env\"], env={})\nb''\n```\n\nHowever, the bug in Sentry SDK \u003c2.8.0 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","aliases":["CVE-2024-40647","GHSA-g92j-qhmh-64v2"],"modified":"2026-07-07T17:47:37.123181809Z","published":"2026-07-07T14:34:36.976776Z","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"},{"type":"PACKAGE","url":"https://pypi.org/project/sentry-sdk"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-g92j-qhmh-64v2"}],"affected":[{"package":{"name":"sentry-sdk","ecosystem":"PyPI","purl":"pkg:pypi/sentry-sdk"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.45.1"},{"introduced":"2.0.0a1"},{"fixed":"2.8.0"}]}],"versions":["0.1.0","0.1.0rc1","0.1.0rc10","0.1.0rc11","0.1.0rc12","0.1.0rc13","0.1.0rc14","0.1.0rc15","0.1.0rc16","0.1.0rc2","0.1.0rc3","0.1.0rc4","0.1.0rc5","0.1.0rc6","0.1.0rc7","0.1.0rc8","0.1.0rc9","0.1.1","0.1.2","0.1.3","0.10.0","0.10.1","0.10.2","0.11.0","0.11.1","0.11.2","0.12.0","0.12.1","0.12.2","0.12.3","0.13.0","0.13.1","0.13.2","0.13.3","0.13.4","0.13.5","0.14.0","0.14.1","0.14.2","0.14.3","0.14.4","0.15.0","0.15.1","0.16.0","0.16.1","0.16.2","0.16.3","0.16.4","0.16.5","0.17.0","0.17.1","0.17.2","0.17.3","0.17.4","0.17.5","0.17.6","0.17.7","0.17.8","0.18.0","0.19.0","0.19.1","0.19.2","0.19.3","0.19.4","0.19.5","0.2.1","0.2.2","0.20.0","0.20.1","0.20.2","0.20.3","0.3.0","0.3.1","0.3.10","0.3.11","0.3.2","0.3.3","0.3.4","0.3.5","0.3.6","0.3.7","0.3.8","0.3.9","0.4.0","0.4.1","0.4.2","0.4.3","0.5.0","0.5.1","0.5.2","0.5.3","0.5.4","0.5.5","0.6.0","0.6.1","0.6.2","0.6.3","0.6.4","0.6.5","0.6.6","0.6.7","0.6.8","0.6.9","0.7.0","0.7.1","0.7.10","0.7.11","0.7.12","0.7.13","0.7.14","0.7.2","0.7.3","0.7.4","0.7.5","0.7.6","0.7.7","0.7.8","0.7.9","0.8.0","0.8.1","0.9.0","0.9.1","0.9.2","0.9.3","0.9.4","0.9.5","1.0.0","1.1.0","1.10.0","1.10.1","1.11.0","1.11.1","1.12.0","1.12.1","1.13.0","1.14.0","1.15.0","1.16.0","1.17.0","1.18.0","1.19.0","1.19.1","1.2.0","1.20.0","1.21.0","1.21.1","1.22.0","1.22.1","1.22.2","1.23.0","1.23.1","1.24.0","1.25.0","1.25.1","1.26.0","1.27.0","1.27.1","1.28.0","1.28.1","1.29.0","1.29.1","1.29.2","1.3.0","1.3.1","1.30.0","1.31.0","1.32.0","1.33.0","1.33.1","1.34.0","1.35.0","1.36.0","1.37.0","1.37.1","1.38.0","1.39.0","1.39.1","1.39.2","1.4.0","1.4.1","1.4.2","1.4.3","1.40.0","1.40.1","1.40.2","1.40.3","1.40.4","1.40.5","1.40.6","1.41.0","1.42.0","1.43.0","1.44.0","1.44.1","1.45.0","1.5.0","1.5.1","1.5.10","1.5.11","1.5.12","1.5.2","1.5.3","1.5.4","1.5.5","1.5.6","1.5.7","1.5.8","1.5.9","1.6.0","1.7.0","1.7.1","1.7.2","1.8.0","1.9.0","1.9.1","1.9.10","1.9.2","1.9.3","1.9.4","1.9.5","1.9.6","1.9.7","1.9.8","1.9.9","2.0.0","2.0.0a1","2.0.0a2","2.0.0rc1","2.0.0rc2","2.0.0rc3","2.0.0rc4","2.0.0rc5","2.0.0rc6","2.0.1","2.1.0","2.1.1","2.2.0","2.2.1","2.3.0","2.3.1","2.4.0","2.5.0","2.5.1","2.6.0","2.7.0","2.7.1"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/sentry-sdk/PYSEC-2026-1917.yaml"}}],"schema_version":"1.7.5","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"}]}