Detections
Analytics

Echo: libsoup3: security update to 3.6.6-1+e12

medium Tenable Cloud Security Plugin ID 473740

Description

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

 - A flaw was found in libsoup. When a client sends an HTTP/2 request body from a non-pollable input stream,
 the library can buffer more data than the current flow-control window later allows. A malicious HTTP/2
 server can shrink SETTINGS_INITIAL_WINDOW_SIZE while that buffered read is still in progress. The client
 then copies the full buffer into a smaller DATA callback without a runtime bounds check, which can abort
 the process or fail the HTTP/2 session. (CVE-2026-85534)

Solution

Update the libsoup3 library and its related packages to version 3.6.6-1+e12 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-85534

Plugin Details

Severity: Medium

ID: 473740

Version: Revision 1.1

Type: Local

Published: 10/8/2026

Updated: 10/8/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.61

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 5.6

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

CVSS Score Source: CVE-2026-85534

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/5/2026

Vulnerability Publication Date: 9/4/2026

Reference Information

CVE: CVE-2026-85534