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Echo: libsoup3: security update to 3.6.5-8

medium Tenable Cloud Security Plugin ID 455565

Description

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

 - A flaw was found in libsoup, an HTTP client/server library. This HTTP Request Smuggling vulnerability
 arises from non-RFC-compliant parsing in the soup_filter_input_stream_read_line() logic, where libsoup
 accepts malformed chunk headers, such as lone line feed (LF) characters instead of the required carriage
 return and line feed (CRLF). A remote attacker can exploit this without authentication or user interaction
 by sending specially crafted chunked requests. This allows libsoup to parse and process multiple HTTP
 requests from a single network message, potentially leading to information disclosure. (CVE-2026-1801)

Solution

Update the libsoup3 library and its related packages to version 3.6.5-8 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-1801

Plugin Details

Severity: Medium

ID: 455565

Version: Revision 1.2

Type: Local

Published: 10/1/2026

Updated: 10/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.1

Percentile: 53.58

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2026-1801

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/1/2026

Vulnerability Publication Date: 2/3/2026

Reference Information

CVE: CVE-2026-1801

IAVA: 2026-A-0139-S