Detections
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Echo: libsoup3: security update to 3.8.0-1

high Tenable Cloud Security Plugin ID 478251

Description

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

 - A vulnerability was found in libsoup's WebSocket frame parsing implementation. The library fails to
 validate length rules specified in RFC 6455 §5.5, which mandates that all WebSocket control frames (e.g.,
 PING, PONG, CLOSE) contain a payload of 125 bytes or less. A remote, unauthenticated attacker can exploit
 this by sending a non-compliant, oversized control frame. Because the parser handles this protocol
 violation improperly instead of throwing an immediate connection termination error, it triggers a internal
 processing crash, resulting in a remote denial of service (DoS) for applications utilizing libsoup
 WebSockets. (CVE-2026-15711)

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-2026-15711

Plugin Details

Severity: High

ID: 478251

Version: Revision 1.1

Type: Local

Published: 11/3/2026

Updated: 11/3/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.61

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-15711

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/24/2026

Vulnerability Publication Date: 7/14/2026

Reference Information

CVE: CVE-2026-15711

IAVA: 2026-A-0894-S