Detections
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Echo: python3.13: security update to 3.13.5-2+e39

critical Tenable Cloud Security Plugin ID 472765

Description

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

 - A remote, unauthenticated TLS client can make a server crash or call through a freed pointer if its
 sni_callback assigns a different context to SSLSocket.context (the documented way to select a certificate
 per server name) and nothing else keeps the original ssl.SSLContext alive. Typical cases are servers that
 create an SSLContext per connection or replace it while connections are open; servers that wrap their
 listening socket with it are not affected. Mitigation: keep a reference to every SSLContext that sets
 sni_callback for the lifetime of the server. TLS clients are not affected. (CVE-2026-19445)

Solution

Update the python3.13 library and its related packages to version 3.13.5-2+e39 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-19445

Plugin Details

Severity: Critical

ID: 472765

Version: Revision 1.1

Type: Local

Published: 10/5/2026

Updated: 10/5/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.39

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2026-19445

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

CVSS v4

Risk Factor: Critical

Base Score: 9.2

Threat Score: 7.1

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 10/1/2026

Vulnerability Publication Date: 8/20/2026

Reference Information

CVE: CVE-2026-19445