CVE-2018-19458 — athlon1600/php-proxy-app
HIGHCVE-2018-19458 is a high-severity (CVSS 7.5) Improper Authentication vulnerability in athlon1600/php-proxy-app. 3 public exploit references exist, so weaponization risk is real. No vendor fix is recorded yet; mitigation options are listed below.
Unauthenticated File Read in PHP Proxy
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
CVE-2018-19458 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 377,636 CVEs with a current EPSS score, this one falls in the 10–50% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
athlon1600/php-proxy-appReal-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
In PHP Proxy 3.0.3, any user can read files from the server without authentication due to an index.php?q=file:/// LFI URI, a different vulnerability than CVE-2018-19246.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | athlon1600/php-proxy-app | all versions | No fix |
Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
PHP Proxy 3.0.3 - Local File Inclusion
by AkkuS · Nov 5, 2018
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for athlon1600/php-proxy-app, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
No patched version of athlon1600/php-proxy-app has shipped for CVE-2018-19458 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2018-19458 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2018-19458. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
How to detect CVE-2018-19458
A community-maintained Nuclei template exists for this CVE. You can scan for it directly:
nuclei -id cve-2018-19458 -u https://target- Template
- PHP Proxy 3.0.3 - Local File Inclusion
- Severity
- high
- Impact
- Successful exploitation of this vulnerability can lead to unauthorized access to sensitive information, remote code execution, and potential compromise of the affected system.
- Remediation
- Upgrade PHP Proxy to a version that is not affected by the vulnerability (3.0.4 or later) or apply the necessary patches provided by the vendor.
Template by ProjectDiscovery nuclei-templates (daffainfo), MIT licensed. View the full template. Scan only systems you are authorised to test.
Frequently Asked Questions
Is CVE-2018-19458 in your dependencies?
O3 Security finds CVE-2018-19458 across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.