HTTP Proxy header vulnerability
PHP through 7.0.8 does not attempt to address RFC 3875 section 4.1.18 namespace conflicts and therefore does not protect applications from the presence of untrusted client data in the HTTP_PROXY environment variable, which might allow remote attackers to redirect an application's outbound HTTP traffic to an arbitrary proxy server via a crafted Proxy header in an HTTP request, as demonstrated by (1) an application that makes a getenv('HTTP_PROXY') call or (2) a CGI configuration of PHP, aka an "httpoxy" issue.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | amphp/artax | < 1.0.4, >= 2.0.0, < 2.0.4 | 1.0.4, 2.0.4 |
| Composer package | bugsnag/bugsnag-laravel | < 2.0.2 | 2.0.2 |
| Composer package | drupal/core | >= 8.0, < 8.1.7 | 8.1.7 |
| Composer package | guzzlehttp/guzzle | >= 6, < 6.2.1, >= 4.0.0-rc2, < 4.2.4, >= 5, < 5.3.1 | 6.2.1, 4.2.4, 5.3.1 |
| Composer package | padraic/humbug_get_contents | < 1.1.2 | 1.1.2 |
| Drupal (core) | drupal/core | >= 8.0, < 8.1.7 | 8.1.7 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2016-5385
- https://github.com/bugsnag/bugsnag-laravel/pull/143
- https://github.com/bugsnag/bugsnag-laravel/pull/145
- https://github.com/humbug/file_get_contents/pull/23
- https://github.com/humbug/file_get_contents/pull/23/commits/848e8c282a863654e76bd958acfb57c81cb739b5
- https://github.com/amphp/artax/commit/81254742812a5a9adf4b085f543f3f21daedcd97
- https://github.com/amphp/artax/commit/b60cf493c9e577a3678865f620b1eb61ab3d7ca9
- https://bugzilla.redhat.com/show_bug.cgi?id=1353794
- https://github.com/FriendsOfPHP/security-advisories/blob/master/guzzlehttp/guzzle/CVE-2016-5385.yaml
- https://github.com/bugsnag/bugsnag-laravel/releases/tag/v2.0.2
- https://github.com/guzzle/guzzle/blob/4.x/CHANGELOG.md#424-2016-07-18
- https://github.com/guzzle/guzzle/blob/5.3/CHANGELOG.md#531---2016-07-18
- https://github.com/guzzle/guzzle/blob/master/CHANGELOG.md#622---2016-10-08
- https://github.com/guzzle/guzzle/releases/tag/6.2.1
- https://github.com/humbug/file_get_contents/releases/tag/1.1.2
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03770en_us
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05333297
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7RMYXAVNYL2MOBJTFATE73TOVOEZYC5R/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GXFEIMZPSVGZQQAYIQ7U7DFVX3IBSDLF/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KZOIUYZDBWNDDHC6XTOLZYRMRXZWTJCP/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7RMYXAVNYL2MOBJTFATE73TOVOEZYC5R/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GXFEIMZPSVGZQQAYIQ7U7DFVX3IBSDLF/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KZOIUYZDBWNDDHC6XTOLZYRMRXZWTJCP/
- https://security.gentoo.org/glsa/201611-22
- https://www.drupal.org/SA-CORE-2016-003
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00003.html
- http://rhn.redhat.com/errata/RHSA-2016-1609.html
- http://rhn.redhat.com/errata/RHSA-2016-1610.html
- http://rhn.redhat.com/errata/RHSA-2016-1611.html
- http://rhn.redhat.com/errata/RHSA-2016-1612.html
- http://rhn.redhat.com/errata/RHSA-2016-1613.html
- http://www.debian.org/security/2016/dsa-3631
- http://www.kb.cert.org/vuls/id/797896
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
- http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- http://www.securityfocus.com/bid/91821
- http://www.securitytracker.com/id/1036335
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-601- Platform
- Composer, Drupal
- Package
amphp/artax, bugsnag/bugsnag-laravel, drupal/core- Disclosed
- 07.04.2022
- Updated
- 11.10.2026 11:17
Sources and licenses
OSV / GitHub Advisory Database - GHSA-m6ch-gg5f-wxx3 - CC BY 4.0
Vulnerability history: guzzlehttp/guzzle
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 14
- First → latest
- 04.2022 08.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 6
- Medium 8
Disclosures per year
- 2022: 5
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 9
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