Detections
Analytics

Echo: restrictedpython: security update to 8.3

high Tenable Cloud Security Plugin ID 464824

Description

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

 - RestrictedPython is a tool that helps to define a subset of the Python language which allows to provide a
 program input into a trusted environment. Prior to 8.3, check_function_argument_names() rejected protected
 guard hook names for regular, variadic, and keyword-only arguments but omitted positional-only arguments,
 allowing __getattr__, _getitem_, _write_, or _print_ to be shadowed by a local parameter and bypass the
 embedding application's access policy. This issue is fixed in version 8.3. (CVE-2026-55830)

Solution

Update the restrictedpython library and its related packages to version 8.3 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-55830

Plugin Details

Severity: High

ID: 464824

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: 5

Percentile: 94.14

CVSS v2

Risk Factor: High

Base Score: 8

Temporal Score: 5.9

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

CVSS Score Source: CVE-2026-55830

CVSS v3

Risk Factor: High

Base Score: 8.3

Temporal Score: 7.2

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/3/2026

Vulnerability Publication Date: 7/8/2026

Reference Information

CVE: CVE-2026-55830