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SCA: security update for pyopenssl (GHSA-5pwr-322w-8jr4)

critical Tenable Cloud Security Plugin ID 438840

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 22.0.0 and prior to version
 26.0.0, if a user provided callback to `set_cookie_generate_callback` returned a cookie value greater than
 256 bytes, pyOpenSSL would overflow an OpenSSL provided buffer. Starting in version 26.0.0, cookie values
 that are too long are now rejected. (CVE-2026-27459)

Solution

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

See Also

https://github.com/advisories/GHSA-5pwr-322w-8jr4

Plugin Details

Severity: Critical

ID: 438840

Version: Revision 1.7

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: High

Score: 7.6

Percentile: 98.48

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-27459

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

CVSS v4

Risk Factor: Critical

Base Score: 9.2

Threat Score: 7.2

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:H/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-2026-27459

cwe: CWE-120