python-dotenv reads key-value pairs from a .env file and can set them as environment variables. Prior to version 1.2.2, `set_key()` and `unset_key()` in python-dotenv follow symbolic links when rewriting `.env` files, allowing a local attacker to overwrite arbitrary files via a crafted symlink when a cross-device rename fallback is triggered. Users should upgrade to v.1.2.2 or, as a workaround, apply the patch manually.
CVSS Details
- CVSS 3.1 Base Score: 6.6
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H)
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