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Echo: waitress: security update to 2.1.2-2-e1

high Tenable Cloud Security Plugin ID 461093

Description

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

 - Waitress is a Web Server Gateway Interface server for Python 2 and 3. When a remote client closes the
 connection before waitress has had the opportunity to call getpeername() waitress won't correctly clean up
 the connection leading to the main thread attempting to write to a socket that no longer exists, but not
 removing it from the list of sockets to attempt to process. This leads to a busy-loop calling the write
 function. A remote attacker could run waitress out of available sockets with very little resources
 required. Waitress 3.0.1 contains fixes that remove the race condition. (CVE-2024-49769)

Solution

Update the waitress library and its related packages to version 2.1.2-2-e1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2024-49769

Plugin Details

Severity: High

ID: 461093

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.67

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-2024-49769

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

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 6.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/15/2025

Vulnerability Publication Date: 10/29/2024

Reference Information

CVE: CVE-2024-49769