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Not in CISA KEV
HIGH severity

CVE-2018-19784 — php-proxy

HIGH

CVE-2018-19784 is a high-severity (CVSS 7.5) CWE-326 vulnerability in athlon1600/php-proxy. 2 public exploit or proof-of-concept references are indexed, so weaponization risk is real. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

Weak Cryptography in PHP-Proxy

Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
2 known
Exploitation data as of Nov 3, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.1%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs66th percentile — riskier than 66% of all scored CVEsHighest risk
0.00%0.54%1.09%1.63%0.2%1.1%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
🐘athlon1600/php-proxy

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

The str_rot_pass function in vendor/atholn1600/php-proxy/src/helpers.php in PHP-Proxy 5.1.0 uses weak cryptography, which makes it easier for attackers to calculate the authorization data needed for local file inclusion.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
🐘Packagistathlon1600/php-proxyall versionsNo fix

Affected Products

1 product · 1 configurations
Application
php-proxyphp-proxy
1 version
5.1.0
Exploits & PoCs
2

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

The str_rot_pass function in vendor/atholn1600/php-proxy/src/helpers.php…

github.comNVDOct 2019

Report on github.com

github.comNVDOct 2019

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for athlon1600/php-proxy, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    The records we use list no patched version of athlon1600/php-proxy for CVE-2018-19784. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. 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.

Frequently Asked Questions

The [str_rot_pass](https://github.com/Athlon1600/php-proxy/blob/9cc42804ddafa079b86b947e4dd83852edddffca/src/helpers.php#L66) function in vendor/atholn1600/php-proxy/src/helpers.php in PHP-Proxy 5.1.0 uses weak cryptography, which makes it easier for attackers to calculate the authorization data needed for local file inclusion.
O3 Security · Impact-Aware SCA

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CVE-2018-19784: php-proxy: Weak Cryptography