What’s Vulnerable › Vulnerabilities

CVE-2024-40647: Unintentional exposure of environment variables to subprocesses in sentry-sdk

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-07-18 · updated 2026-06-17
• Weakness: CWE-200

Description

sentry-sdk is the official Python SDK for Sentry.io. A bug in Sentry's Python SDK < 2.8.0 allows the environment variables to be passed to subprocesses despite the `env={}` setting. In 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. Due to the bug in Sentry SDK, with the Stdlib integration enabled (which is enabled by default), this expectation is not fulfilled, and all environment variables are being passed to subprocesses instead. The issue has been patched in pull request #3251 and is included in sentry-sdk==2.8.0. We 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, you can disable all default integrations.

Affected products

• getsentry sentry-javascript: before 2.8.0

References

• https://docs.python.org/3/library/subprocess.html
• https://docs.sentry.io/platforms/python/integrations/default-integrations
• https://docs.sentry.io/platforms/python/integrations/default-integrations/#stdlib
• https://github.com/getsentry/sentry-python/commit/763e40aa4cb57ecced467f48f78f335c87e9bdff
• https://github.com/getsentry/sentry-python/pull/3251
• https://github.com/getsentry/sentry-python/releases/tag/2.8.0
• https://github.com/getsentry/sentry-python/security/advisories/GHSA-g92j-qhmh-64v2
• https://docs.python.org/3/library/subprocess.html
• https://docs.sentry.io/platforms/python/integrations/default-integrations
• https://docs.sentry.io/platforms/python/integrations/default-integrations/#stdlib
• https://github.com/getsentry/sentry-python/commit/763e40aa4cb57ecced467f48f78f335c87e9bdff
• https://github.com/getsentry/sentry-python/pull/3251

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