Detections
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Echo: daphne: security update to 4.2.2

medium Tenable Self-Hosted Container Security Plugin ID 461011

Description

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

 - daphne before 4.2.2 reconstructs a raw HTTP request from Twisted's parsed headers and feeds it to autobahn
 for WebSocket handshake processing. Twisted does not treat \x0b, \x0c, \x1c, \x1d, \x1e, or \x85 as header
 line separators, but autobahn decodes header values to str and calls splitlines(). An attacker can exploit
 this parser differential to inject additional headers into the ASGI scope passed to the application.
 daphne now rejects requests with these bytes in any header value with a 400 response. (CVE-2026-44546)

Solution

Update the daphne library and its related packages to version 4.2.2 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-44546

Plugin Details

Severity: Medium

ID: 461011

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: Low

Score: 1.2

Percentile: 0.01

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2026-44546

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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: 9/28/2026

Vulnerability Publication Date: 6/3/2026

Reference Information

CVE: CVE-2026-44546