Detections
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Echo: libsoup3: security update to 3.6.6-1+e3

high Tenable Cloud Security Plugin ID 458585

Description

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

 - A flaw was found in libsoup, a library for handling HTTP requests. This vulnerability, known as a Use-
 After-Free, occurs in the HTTP/2 server implementation. A remote attacker can exploit this by sending
 specially crafted HTTP/2 requests that cause authentication failures. This can lead to the application
 attempting to access memory that has already been freed, potentially causing application instability or
 crashes, resulting in a Denial of Service (DoS). (CVE-2026-4271)

Solution

Update the libsoup3 library and its related packages to version 3.6.6-1+e3 or later.

See Also

https://access.redhat.com/errata/RHSA-2026:15968

https://access.redhat.com/errata/RHSA-2026:17482

https://access.redhat.com/errata/RHSA-2026:19143

https://advisory.echohq.com/cve/CVE-2026-4271

Plugin Details

Severity: High

ID: 458585

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.76

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2026-4271

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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-2026-4271