CVEvulnerability

CVE-2026-28684

6.6 MEDIUM Published 2026-04-20 Modified 2026-10-26 Official page ↗
Status
Analyzed
Published
2026-04-20
Last modified
2026-10-26
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.6 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H
Weaknesses
CWE-59, CWE-61

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.

Affected configurations

• saurabh-kumar python-dotenv (< 1.2.2)

Related

Weakness · CWE (2)

  • CWE-59 Improper Link Resolution Before File Access weakness
  • CWE-61 UNIX Symbolic Link (Symlink) Following weakness

References