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No exploitation reported

CVE-2026-128046

OpenMage magento-lts 20.17.0 before 20.18.2 Unrestricted File Upload RCE via Custom Options

No exploitation reported by the sources we read.

  • Published2026-11-13
  • WeaknessCWE-184

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

OpenMage magento-lts 20.17.0 before 20.18.2 and 21.0.0-beta1 before 21.0.0-beta3 contains an unrestricted file upload vulnerability because the general/file/protected_extensions blocklist omits phar, php8, and phps. Unauthenticated attackers can upload a .phar file through a product File custom option to a predictable media/custom_options path and request it directly to execute code on servers that map .phar to PHP and serve that directory.

Timeline

dates in UTC
  1. 2026-11-1309:33CVE publishedCNA

Versions per branch

Products declared by the CNA

As VulnCheck, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • OpenMage magento-ltsother versions: not affected
    Affected
    • ≥ 20.17.0, < 20.18.2fixed in 20.18.2semver

    Not affected = 20.18.2

  • OpenMage magento-ltsother versions: not affected
    Affected
    • ≥ 21.0.0-beta1, < 21.0.0-beta3fixed in 21.0.0-beta3semver

    Not affected = 21.0.0-beta3

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-13

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-128046 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionnone2026-11-13
  • CNACVSS 4.09.22026-11-13
  • CNACVSS 3.18.12026-11-13
  • NVDCVSS 3.18.1read 2026-11-13
  • CNAweakness (CWE)CWE-1842026-11-13
  • NVDweakness (CWE)CWE-184read 2026-11-13
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
2026-11-13
Last Modified
2026-11-13
NVD status
Deferred
GitHub Advisory
GHSA-r74m-vw7m-pr6g

Frequently asked questions

What is CVE-2026-128046?

OpenMage magento-lts 20.17.0 before 20.18.2 and 21.0.0-beta1 before 21.0.0-beta3 contains an unrestricted file upload vulnerability because the general/file/protected_extensions blocklist omits phar, php8, and phps. Unauthenticated attackers can upload a .phar file through a product File custom option to a predictable media/custom_options path and request it directly to execute code on servers that map .phar to PHP and serve that directory.

Is CVE-2026-128046 actively exploited?

Active exploitation of CVE-2026-128046 has not been confirmed.

What is the CVSS score for CVE-2026-128046?

CVE-2026-128046 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

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