Detections
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Echo: stdlib: security update to 1.26.9

high Tenable Self-Hosted Container Security Plugin ID 474144

Description

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

 - Multiple ECH outer extension references are not permitted under RFC 9849; previously, a client could send
 a well-crafted packet that could trigger memory exhaustion in the server process by specifying multiple
 references. We now reject these as malformed and curb the memory amplification vector as a result.
 (CVE-2026-97031)

Solution

Update the stdlib library and its related packages to version 1.26.9 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-97031

Plugin Details

Severity: High

ID: 474144

Version: Revision 1.1

Type: Local

Published: 10/10/2026

Updated: 10/10/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.67

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-2026-97031

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: 10/10/2026

Vulnerability Publication Date: 10/8/2026

Reference Information

CVE: CVE-2026-97031