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Medium

Magento LTS vulnerable to stored XSS in admin file form

  • Disclosed: 27.02.2024
  • Updated: 11.10.2026 10:22

Summary

OpenMage is affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by a low-privileged attacker to inject malicious scripts into vulnerable form fields.

Details

Mage_Adminhtml_Block_System_Config_Form_Field_File does not escape filename value in certain situations. Same as: https://nvd.nist.gov/vuln/detail/CVE-2024-20717

PoC

  1. Create empty file with this filename: <img src=x onerror=alert(1)>.crt
  2. Go to System > Configuration > Sales | Payment Methonds.
  3. Click Configure on PayPal Express Checkout.
  4. Choose API Certificate from dropdown API Authentication Methods.
  5. Choose the XSS-file and click Save Config.
  6. Profit, alerts "1" -> XSS.
  7. Reload, alerts "1" -> Stored XSS.

Impact

Affects admins that have access to any fileupload field in admin in core or custom implementations. Malicious JavaScript may be executed in a victim’s browser when they browse to the page containing the vulnerable field.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Composer package openmage/magento-lts >= 20.0.0, < 20.5.0, < 19.5.3 20.5.0, 19.5.3

References

CVSS score 5.4/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE)
CWE-79
Platform
Composer
Package
openmage/magento-lts
Disclosed
27.02.2024
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-gp6m-fq6h-cjcx - CC BY 4.0

Vulnerability history: openmage/magento-lts

All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (26) in the archive
Total entries
26
First → latest
08.2020 05.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 3
  • High 12
  • Medium 10
  • Low 1

Disclosures per year

Severity:
  1. Magento LTS has Weak API Session ID — Predictable MD5 of Time-Derived Inputs
    Critical CVE-2026-42155 < 20.18.0 20.18.0
  2. OpenMage LTS: Customer File Upload Extension Blocklist Bypass → Remote Code Execution
    High · 8.8 CVE-2026-40488 < 20.17.0 20.17.0
  3. OpenMage LTS: Phar Deserialization leads to Remote Code Execution
    High · 8.1 CVE-2026-25524 < 20.17.0 20.17.0
  4. Magento LTS vulnerable to stored XSS in admin file form this entry
    Medium · 5.4 ghsa-gp6m-fq6h-cjcx >= 20.0.0, < 20.5.0, < 19.5.3 20.5.0, 19.5.3
  5. Magento LTS vulnerable to Stored XSS via TinyMCE WYSIWYG Editor
    High · 7.5 ghsa-9j5w-2cqc-cwj9 < 20.2.0 20.2.0
  6. Magento LTS's guest order "protect code" can be brute-forced too easily
    High · 7.5 CVE-2023-41879 < 19.5.1, >= 20.0.0, < 20.1.1 19.5.1, 20.1.1
  7. DataFlow upload remote code execution vulnerability
    High · 7.2 CVE-2021-41231 < 19.4.22, >= 20.0.0, < 20.0.19 19.4.22, 20.0.19
  8. Fix for authenticated remote code execution through layout update
    High · 8.8 CVE-2021-41144 < 19.4.22, >= 20.0.0, < 20.0.19 19.4.22, 20.0.19
  9. Fix for arbitrary file deletion in customer media allows for remote code execution
    High · 7.2 CVE-2021-41143 < 19.4.22, >= 20.0.0, < 20.0.19 19.4.22, 20.0.19
  10. Fix for arbitrary command execution in custom layout update through blocks
    High · 7.2 CVE-2021-39217 < 19.4.22, >= 20.0.0, < 20.0.19 19.4.22, 20.0.19
  11. Layout XML Arbitrary Code Fix
    High CVE-2021-32758 < 19.4.15, >= 20.0.0, < 20.0.13 19.4.15, 20.0.13
  12. Data Flow Sanitation Issue Fix
    High CVE-2021-32759 < 19.4.15, >= 20.0.0, < 20.0.13 19.4.15, 20.0.13
  13. Backport for CVE-2021-21024 Blind SQLi from Magento 2
    Critical · 9.1 CVE-2021-21427 < 19.4.13, >= 20.0.0, < 20.0.9 19.4.13, 20.0.9
  14. Fixes a bug in Zend Framework's Stream HTTP Wrapper
    Critical · 9.8 CVE-2021-21426 < 19.4.13, >= 20.0.0, < 20.0.9 19.4.13, 20.0.9
  15. RCE via PHP Object injection via SOAP Requests
    High · 8.0 CVE-2020-15244 < 19.4.8, >= 20.0.0, < 20.0.4 19.4.8, 20.0.4
  16. Observable Timing Discrepancy in OpenMage LTS
    High · 8.0 CVE-2020-15151 < 19.4.6, >= 20.0.0, < 20.0.2 19.4.6, 20.0.2

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