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Echo: libsoup3: security update to 3.6.6-1

medium Tenable Self-Hosted Container Security Plugin ID 465310

Description

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

 - A flaw was found in libsoup. An attacker controlling the value used to set the Content-Type header can
 inject a Carriage Return Line Feed (CRLF) sequence due to improper input sanitization in the
 `soup_message_headers_set_content_type()` function. This vulnerability allows for the injection of
 arbitrary header-value pairs, potentially leading to HTTP header injection and response splitting attacks.
 (CVE-2026-3634)

Solution

Update the libsoup3 library and its related packages to version 3.6.6-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-3634

Plugin Details

Severity: Medium

ID: 465310

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 7.52

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5

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

CVSS Score Source: CVE-2026-3634

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/20/2026

Vulnerability Publication Date: 3/17/2026

Reference Information

CVE: CVE-2026-3634