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SCA: security update for openmage/magento-lts (GHSA-2cwr-gcf9-pvxr)

critical Tenable Self-Hosted Container Security Plugin ID 441230

Description

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

 - Magento Long Term Support (LTS) is an unofficial, community-driven project provides an alternative to the
 Magento Community Edition e-commerce platform with a high level of backward compatibility. Prior to
 20.18.0, the XML-RPC / SOAP API session ID is generated using an outdated, time-based construction rather
 than a Cryptographically Secure Pseudo-Random Number Generator (CSPRNG). All inputs to the MD5 hash are
 time-derived and non-secure. Because the resulting digest relies entirely on the timestamp and the PHP
 internal LCG state, the effective entropy is severely constrained. This violates the OWASP ASVS v4
 requirement of ≥ 64 bits of entropy (V3.2.2) and NIST SP 800-63B standards. By narrowing the LCG window
 (via server state leaks or general predictability) and leveraging the lack of API rate-limiting, an
 attacker can generate a localized pool of candidate MD5 hashes and execute a high-speed online brute-force
 attack to hijack active API sessions. This vulnerability is fixed in 20.18.0. (CVE-2026-42155)

Solution

Update the openmage/magento-lts library and its related packages to version 20.18.0 or later.

See Also

https://github.com/advisories/GHSA-2cwr-gcf9-pvxr

Plugin Details

Severity: Critical

ID: 441230

Version: Revision 1.7

Type: Local

Family: SCA Checks

Published: 5/6/2026

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 94.4

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2026-42155

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:H/I:N/A:N

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

CVSS v4

Risk Factor: Critical

Base Score: 9.3

Threat Score: 8

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/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: 5/5/2026

Vulnerability Publication Date: 5/5/2026

Reference Information

CVE: CVE-2026-42155