Detections
Analytics

SCA: security update for pyopenssl (GHSA-vp96-hxj8-p424)

medium Tenable Cloud Security Plugin ID 438853

Description

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

 - pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 0.14.0 and prior to version
 26.0.0, if a user provided callback to `set_tlsext_servername_callback` raised an unhandled exception,
 this would result in a connection being accepted. If a user was relying on this callback for any security-
 sensitive behavior, this could allow bypassing it. Starting in version 26.0.0, unhandled exceptions now
 result in rejecting the connection. (CVE-2026-27448)

Solution

Update the pyopenssl library and its related packages to version 26.0.0 or later.

See Also

https://github.com/advisories/GHSA-vp96-hxj8-p424

Plugin Details

Severity: Medium

ID: 438853

Version: Revision 1.8

Type: Local

Family: SCA Checks

Published: 3/16/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3.9

Percentile: 52.79

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2026-27448

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

CVSS v4

Risk Factor: Medium

Base Score: 6.3

Threat Score: 1.7

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 3/16/2026

Vulnerability Publication Date: 3/16/2026

Reference Information

CVE: CVE-2026-27448

cwe: CWE-636