Detections
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Echo: libsoup3: security update to 3.8.0-1

medium Tenable Cloud Security Plugin ID 478241

Description

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

 - A flaw was found in libsoup. After a CONNECT tunnel is established through an HTTP proxy, libsoup
 incorrectly attaches the Proxy-Authorization header to subsequent HTTPS requests sent through that tunnel
 to the destination server. This allows the destination server to capture proxy credentials, leading to
 information disclosure. (CVE-2026-66339)

Solution

Update the libsoup3 library and its related packages to version 3.8.0-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-66339

Plugin Details

Severity: Medium

ID: 478241

Version: Revision 1.1

Type: Local

Published: 11/3/2026

Updated: 11/3/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.68

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2026-66339

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/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: 7/25/2026

Vulnerability Publication Date: 7/24/2026

Reference Information

CVE: CVE-2026-66339