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Not in CISA KEV
HIGH severity

CVE-2018-19422 — subrion

HIGHFix: intelliants/subrion@74359bc

CVE-2018-19422 is a high-severity (CVSS 7.2) Unrestricted File Upload vulnerability in intelliants/subrion. 9 public exploit or proof-of-concept references are indexed, so weaponization risk is real. A fix is available for intelliants/subrion — see the affected versions and patch details below.

Subrion CMS RCE Vulnerability

Also known asGHSA-73xj-v6gc-g5p5
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
9 known
Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
64.5%probability of exploitation in next 30 days
High Risk0.00%
Lower risk than most CVEs99th percentile — riskier than 99% of all scored CVEsHighest risk
57.7%69.3%80.9%92.5%86.0%64.5%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐘intelliants/subrion

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

/panel/uploads in Subrion CMS 4.2.1 allows remote attackers to execute arbitrary PHP code via a .pht or .phar file, because the .htaccess file omits these.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistintelliants/subrionall versions4.2.2composer require intelliants/subrion:^4.2.2

Affected Products

1 product · 1 configurations
Application
subrion cmsintelliants
1 version
4.2.1
Exploits & PoCs
9

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-49876webappsphp

Subrion CMS 4.2.1 - Arbitrary File Upload

by Fellipe Oliveira · May 17, 2021

Exploit-DB Source

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for intelliants/subrion, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update intelliants/subrion to 4.2.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-19422 is resolved across your whole dependency graph.

  3. Workarounds

    Treat uploaded files as untrusted until proven otherwise: validate the actual content type rather than the supplied extension, store uploads outside the web root on a volume mounted without execute permission, and rename them to server-generated identifiers so an attacker cannot choose the path a request will later resolve.

Frequently Asked Questions

/panel/uploads in Subrion CMS 4.2.1 allows remote attackers to execute arbitrary PHP code via a .pht or .phar file, because the .htaccess file omits these.
O3 Security · Impact-Aware SCA

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CVE-2018-19422: subrion — Fixed in 4.2.2