SCA: security update for pyload-ng (GHSA-mp82-fmj6-f22v)

medium Tenable Cloud Security Plugin ID 440469

Description

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

- pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev98, the
set_session_cookie_secure before_request handler in src/pyload/webui/app/__init__.py reads the
X-Forwarded-Proto header from any HTTP request without validating that the request originates from a
trusted proxy, then mutates the global Flask configuration SESSION_COOKIE_SECURE on every request. Because
pyLoad uses the multi-threaded Cheroot WSGI server (request_queue_size=512), this creates a race condition
where an attacker's request can influence the Secure flag on other users' session cookies — either
downgrading cookie security behind a TLS proxy or causing a session denial-of-service on plain HTTP
deployments. This vulnerability is fixed in 0.5.0b3.dev98. (CVE-2026-40594)

Solution

Update the pyload-ng library and its related packages to version 0.5.0b3.dev98 or later.

Plugin Details

Severity: Medium

ID: 440469

Version: Revision 1.8

Type: Local

Family: SCA Checks

Published: 4/16/2026

Updated: 6/1/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 7.71

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3.1

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

CVSS Score Source: CVE-2026-40594

CVSS v3

Risk Factor: Medium

Base Score: 4.8

Temporal Score: 4.3

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/16/2026

Vulnerability Publication Date: 4/16/2026

Reference Information

CVE: CVE-2026-40594

cwe: CWE-346

Detections

Analytics