Detections
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Echo: libsoup3: security update to 3.6.6-1

medium Tenable Cloud Security Plugin ID 462534

Description

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

 - A flaw was found in libsoup, a library used by applications to send network requests. This vulnerability
 occurs because libsoup does not properly validate hostnames, allowing special characters to be injected
 into HTTP headers. A remote attacker could exploit this to perform HTTP smuggling, where they can send
 hidden, malicious requests alongside legitimate ones. In certain situations, this could lead to Server-
 Side Request Forgery (SSRF), enabling an attacker to force the server to make unauthorized requests to
 other internal or external systems. The impact is low, as SoupServer is not actually used in internet
 infrastructure. (CVE-2026-3632)

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-2026-3632

Plugin Details

Severity: Medium

ID: 462534

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 2.8

Percentile: 22.57

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.1

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

CVSS Score Source: CVE-2026-3632

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/1/2026

Vulnerability Publication Date: 3/17/2026

Reference Information

CVE: CVE-2026-3632