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Vulnerability record · CVE-2021-21064 · published 25 February 2021

CVE-2021-21064: Magento upward connector path traversal vulnerability

MMagento · Upward Connector

Magento UPWARD-php version 1.1.4 (and earlier) is affected by a Path traversal vulnerability in Magento UPWARD Connector version 1.1.2 (and earlier) due to the upload feature. An attacker could potentially exploit this vulnerability to upload a malicious YAML file that can contain instructions which allows reading arbitrary files from the remote server. Access to the admin console is required for successful exploitation.

4.9 CVSS 3.0 Medium EPSS 8.5% · top 5.1% CWE-22 · Path traversal
4.9CVSS 3.0 base score, v2 4.0
8.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

Magento UPWARD-php version 1.1.4 (and earlier) is affected by a Path traversal vulnerability in Magento UPWARD Connector version 1.1.2 (and earlier) due to the upload feature. An attacker could potentially exploit this vulnerability to upload a malicious YAML file that can contain instructions which allows reading arbitrary files from the remote server. Access to the admin console is required for successful exploitation.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/magento/upward-php/security Third Party Advisory
https://github.com/magento/upward-php/security/advisories/GHSA-p4pw-hpjx-5685 Third Party Advisory
https://github.com/magento/upward-php/security Third Party Advisory
https://github.com/magento/upward-php/security/advisories/GHSA-p4pw-hpjx-5685 Third Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-21064), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.