CVE-2026-28684

MediumCVSS 6.6/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 6.6/10CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H

Weakness enumeration

CWE-59CWE-61

Affected software

No affected versions have been published.

Timeline

Published
Apr 20, 2026
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2026-28684: Medium severity, CVSS 6.6 | Vulnix