Detections
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Echo: python-dotenv: security update to 1.2.1+echo.1

medium Tenable Self-Hosted Container Security Plugin ID 464905

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2026-28684)

Solution

Update the python-dotenv library and its related packages to version 1.2.1+echo.1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-28684

Plugin Details

Severity: Medium

ID: 464905

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/3/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.65

CVSS v2

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 4.9

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:C/A:C

CVSS Score Source: CVE-2026-28684

CVSS v3

Risk Factor: Medium

Base Score: 6.6

Temporal Score: 5.9

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/10/2026

Vulnerability Publication Date: 4/20/2026

Reference Information

CVE: CVE-2026-28684