Detections
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SCA: security update for python-engineio (GHSA-cgwc-pv48-fhj5)

high Tenable Self-Hosted Container Security Plugin ID 444077

Description

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

 - python-engineio is a Python implementation of the Engine.IO realtime client and server. Prior to version
 4.13.2, an attacker can cause the creation of unnecessary background threads in the python-engineio server
 by exploiting the heartbeat mechanism, which launches a thread when a new connection is received, and when
 the client sends a PONG packet. This issue primarily affects synchronous servers. Asynchronous servers
 allocate background tasks instead of physical threads, which are lightweight and less likely to cause
 denial of service. However, the fix that was implemented was also applied to the asynchronous case.
 Version 4.13.2 addresses this issue as follows: The initial background thread (or async task( for
 heartbeat management is only launched if a client passes authentication in the `connect` handler; and the
 server now ensures that there is only one background heatbeat thread (or async task) per client at a given
 point in time. Out of sequence PONG packets are now discarded when an active heartbeat thread is already
 running. (CVE-2026-48802)

Solution

Update the python-engineio library and its related packages to version 4.13.2 or later.

See Also

https://github.com/advisories/GHSA-cgwc-pv48-fhj5

Plugin Details

Severity: High

ID: 444077

Version: Revision 1.4

Type: Local

Family: SCA Checks

Published: 6/27/2026

Updated: 8/12/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.78

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-48802

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/26/2026

Vulnerability Publication Date: 6/26/2026

Reference Information

CVE: CVE-2026-48802

cwe: CWE-770