ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2016-5388

Apache Tomcat 7.x through 7.0.70 and 8.x through 8.5.4, when the CGI Servlet is enabled, follows RFC 3875 section 4.1.18 and therefore does not protect applications fr…

Published Jul 19, 2016 · catalog updated Oct 15, 2026 · enterprise linux desktop

Check this week

CVE-2016-5388 is not in CISA KEV. FIRST estimates a 50.90% chance of exploitation in the next 30 days. Check whether you run enterprise linux desktop.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
50.90%
Remediation
Advisory link
Affected products
cpe apache/tomcat · cpe hp/system management homepage · cpe oracle/linux · cpe redhat/enterprise linux desktop · cpe redhat/enterprise linux hpc node · cpe redhat/enterprise linux hpc node eus

Apache Tomcat 7.x through 7.0.70 and 8.x through 8.5.4, when the CGI Servlet is enabled, follows RFC 3875 section 4.1.18 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, aka an "httpoxy" issue. NOTE: the vendor states "A mitigation is planned for future releases of Tomcat, tracked as CVE-2016-5388"; in other words, this is not a CVE ID for a vulnerability.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe apache/tomcatversion unspecified
  • cpe hp/system management homepageversion unspecified
  • cpe oracle/linux6
  • cpe redhat/enterprise linux desktop6.0
  • cpe redhat/enterprise linux desktop7.0
  • cpe redhat/enterprise linux hpc node7.0
  • cpe redhat/enterprise linux hpc node eus7.2
  • cpe redhat/enterprise linux server7.0
  • cpe redhat/enterprise linux server aus7.2
  • cpe redhat/enterprise linux server eus7.2
  • cpe redhat/enterprise linux server tus7.2
  • cpe redhat/enterprise linux workstation7.0

How to fix CVE-2016-5388

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2016-5388 is not in CISA KEV. FIRST estimates a 50.90% chance of exploitation in the next 30 days. Check whether you run enterprise linux desktop.

Which versions are affected?

Compare what you have installed with redhat/enterprise linux desktop 6.0; redhat/enterprise linux desktop 7.0; redhat/enterprise linux hpc node 7.0; redhat/enterprise linux hpc node eus 7.2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-284: Improper Access Control. EPSS 50.90%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 19, 2016 · NIST NVD

    Detected

    Apache Tomcat 7.x through 7.0.70 and 8.x through 8.5.4, when the CGI Servlet is enabled, follows RFC 3875 section 4.1.18 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

  2. Oct 15, 2026 · NIST NVD

    Updated

    Apache Tomcat 7.x through 7.0.70 and 8.x through 8.5.4, when the CGI Servlet is enabled, follows RFC 3875 section 4.1.18 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

Sources

  • CVE.orgVulnerability recordCVE-2016-5388

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2016-5388

    30-day exploitation probability 50.9%

    first.org
  • NIST NVDVulnerability recordCVE-2016-5388

    Apache Tomcat 7.x through 7.0.70 and 8.x through 8.5.4, when the CGI Servlet is enabled, follows RFC 3875 section 4.1.18 and therefore does not protect applications from the presence of untrusted client data in the HTTP_PROXY environment variable, which might allow remote attacke

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.