CVE-2026-28684

MEDIUM EPSS 14.4%
Published Apr 20, 20262mo ago · Modified Jun 17, 20262w ago
6.6 CVSS 3.1
Medium
Find Similar
Published Apr 20, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
6.6
Exploitability
1.3
Impact
5.2
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction Required
Scope Unchanged
Confidentiality None
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
14.4% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 2

CWE-59
CWE-61

Affected Products 1

VendorProductVersionRange
saurabh-kumarpython-dotenv* <1.2.2

References 3

  • github.com https://github.com/theskumar/python-dotenv/commit/790c5c02991100aa1bf41ee5330aca75edc51311
    Patch
  • github.com https://github.com/theskumar/python-dotenv/releases/tag/v1.2.2
    Release Notes
  • github.com https://github.com/theskumar/python-dotenv/security/advisories/GHSA-mf9w-mj56-hr94
    ExploitPatchVendor Advisory

Remediation

  • github.com https://github.com/theskumar/python-dotenv/commit/790c5c02991100aa1bf41ee5330aca75edc51311
    Patch
  • github.com https://github.com/theskumar/python-dotenv/security/advisories/GHSA-mf9w-mj56-hr94
    ExploitPatchVendor Advisory