Detections
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Echo: tornado: security update to 6.5.6

high Tenable Cloud Security Plugin ID 457448

Description

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

 - Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6,
 SimpleAsyncHTTPClient shallow-copied redirected requests and removed only the Host header, leaving
 Authorization, auth_username, auth_password, and auth_mode in place when a redirect changed scheme, host,
 or port. This issue is fixed in version 6.5.6. (CVE-2026-49853)

Solution

Update the tornado library and its related packages to version 6.5.6 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-49853

Plugin Details

Severity: High

ID: 457448

Version: Revision 1.2

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3.3

Percentile: 51.2

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-49853

CVSS v3

Risk Factor: High

Base Score: 7.7

Temporal Score: 6.7

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/1/2026

Vulnerability Publication Date: 6/15/2026

Reference Information

CVE: CVE-2026-49853

IAVB: 2026-B-0166-S