`CVE-2016-5388`

8.1 High No exploit published

Description

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.

CWE-284 · Improper access control

Exploitation Status

Forecast only (51% 30-day chance)

Nothing has been published about exploiting this CVE. EPSS nonetheless forecasts it in the top 1.1% of all scored CVEs: a model prediction, not an observation, and the only signal available for a record with no other.

CVSS E:U

CISA KEV not listed
CISA Vulnrichment no assessment published
Indexed PoC none indexed
EPSS 51% chance in 30 days A model prediction, not an observation. Higher than 99% of all scored CVEs.

Waratek Defense Posture

No exploit published

In RASP's scope with an upstream fix path, but nobody has published a working exploit. That is a statement about what has been published, not a finding that the defect is unreachable or unimportant.

Protection none
Action unverified patch rule
Review automated upstream-data
Record active

Decided by no-exploit-published : A published working exploit for this candidate, not only a proof of concept, a forecast, or nothing at all

Finding This CVE is not listed in CISA KEV, CISA Vulnrichment records no active exploitation, and no reviewed exploit catalogue carries an entry for it. Nobody has published something a stranger can run, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.

Decided by	`no-exploit-published` : A published working exploit for this candidate, not only a proof of concept, a forecast, or nothing at all
Finding	This CVE is not listed in CISA KEV, CISA Vulnrichment records no active exploitation, and no reviewed exploit catalogue carries an entry for it. Nobody has published something a stranger can run, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.

CVSS

8.1 HIGH v3.0 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H 2 metrics

VRT selects the newest version's highest entry and publishes it as cvssScore, newest rather than largest because scores are not comparable across versions, and highest rather than first because the first entry is frequently a CNA placeholder scoring 0.0 over NVD's own analysis.

Version Score Band Vector Assigner Type

CVSS 3.0 8.1 HIGH CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H NVD Primary published

CVSS 2.0 5.1 no band published AV:N/AC:H/Au:N/C:P/I:P/A:P NVD Primary

Version	Score	Band	Vector	Assigner	Type
CVSS 3.0	8.1	HIGH	`CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H`	NVD	Primary	published
CVSS 2.0	5.1	no band published	`AV:N/AC:H/Au:N/C:P/I:P/A:P`	NVD	Primary

Affected Software & Releases

☕ Maven Library Packages

Artifact coordinates and fix boundaries from OSV.dev

Package Coordinate Introduced Fixed Last affected

org.apache.tomcat:tomcat-catalina 7.0.0 7.0.72 unbounded

org.apache.tomcat:tomcat-catalina 8.0.0 8.5.5 unbounded

Package Coordinate	Introduced	Fixed	Last affected
`org.apache.tomcat:tomcat-catalina`	7.0.0	`7.0.72`	unbounded
`org.apache.tomcat:tomcat-catalina`	8.0.0	`8.5.5`	unbounded

🖥️ Product CPEs & Version Ranges

12 product(s) over 20 version claims (uncapped)

Source	Vendor	Product	Scheme	Affected Versions
nvd	apache	tomcat	generic	≥ 6.0 and ≤ 6.0.45 · ≥ 7.0 and ≤ 7.0.70 · ≥ 8.0 and ≤ 8.5.4
nvd	hp	system management homepage	generic	≤ 7.5.5.0
nvd	oracle	linux	generic	6 · 7
osv	org.apache.tomcat	tomcat-catalina	generic	≥ 7.0.0 and ＜ 7.0.72 · ≥ 8.0.0 and ＜ 8.5.5
nvd	redhat	enterprise linux desktop	generic	6.0 · 7.0
nvd	redhat	enterprise linux hpc node	generic	6.0 · 7.0
nvd	redhat	enterprise linux hpc node eus	generic	7.2
nvd	redhat	enterprise linux server	generic	6.0 · 7.0
nvd	redhat	enterprise linux server aus	generic	7.2
nvd	redhat	enterprise linux server eus	generic	7.2
nvd	redhat	enterprise linux server tus	generic	7.2
nvd	redhat	enterprise linux workstation	generic	6.0 · 7.0

Source

Vendor

Product

Scheme

Affected Versions

nvd

apache

tomcat

generic

≥ 6.0 and ≤ 6.0.45 · ≥ 7.0 and ≤ 7.0.70 · ≥ 8.0 and ≤ 8.5.4

nvd

system management homepage

generic

≤ 7.5.5.0

nvd

oracle

linux

generic

6 · 7

osv

org.apache.tomcat

tomcat-catalina

generic

≥ 7.0.0 and ＜ 7.0.72 · ≥ 8.0.0 and ＜ 8.5.5

nvd

redhat

enterprise linux desktop

generic

6.0 · 7.0

nvd

redhat

enterprise linux hpc node

generic

6.0 · 7.0

nvd

redhat

enterprise linux hpc node eus

generic

7.2

nvd

redhat

enterprise linux server

generic

6.0 · 7.0

nvd

redhat

enterprise linux server aus

generic

7.2

nvd

redhat

enterprise linux server eus

generic

7.2

nvd

redhat

enterprise linux server tus

generic

7.2

nvd

redhat

enterprise linux workstation

generic

6.0 · 7.0

References

URL	Tags
https://github.com/apache/tomcat/commit/1b91e91194a095ea922f96d1dccddf6fbc446e54	WEB
https://github.com/apache/tomcat/commit/880250877b0643956435282afb9c111450cfff4c	WEB
https://github.com/apache/tomcat/commit/fb3569fbb9a2f55459aa8e1e22bc35a737e66329	WEB
https://access.redhat.com/errata/RHSA-2016:1624	WEB
https://lists.apache.org/thread.html/6d3d34adcf3dfc48e36342aa1f18ce3c20bb8e4c458a97508d5bfed1@%3Cissues.activemq.apache.org%3E	WEB
https://lists.apache.org/thread.html/r2853582063cfd9e7fbae1e029ae004e6a83482ae9b70a698996353dd%40%3Cusers.tomcat.apache.org%3E	WEB
https://lists.apache.org/thread.html/r2853582063cfd9e7fbae1e029ae004e6a83482ae9b70a698996353dd@%3Cusers.tomcat.apache.org%3E	WEB
https://lists.apache.org/thread.html/rc6b2147532416cc736e68a32678d3947b7053c3085cf43a9874fd102%40%3Cusers.tomcat.apache.org%3E	WEB
https://lists.apache.org/thread.html/rc6b2147532416cc736e68a32678d3947b7053c3085cf43a9874fd102@%3Cusers.tomcat.apache.org%3E	WEB
https://lists.apache.org/thread.html/rf21b368769ae70de4dee840a3228721ae442f1d51ad8742003aefe39%40%3Cusers.tomcat.apache.org%3E	WEB

URL

Timeline

Published 2016-07-19 Last modified 2026-06-17

Published	2016-07-19	By the CVE Program.
NVD record modified	2026-06-17	NVD's own last-modified date for this record.

Published

2016-07-19

By the CVE Program.

NVD record modified

2026-06-17

NVD's own last-modified date for this record.

Pipeline policy audit (15 of 21 rules evaluated)

15 of 21 rules ran. The rest were never reached, because an earlier stage settled the CVE, a distinct claim from a rule that ran and found nothing.

# Rule Outcome Status Detail

identity: Does this identifier describe a vulnerability at all? first match wins

1 rejected no-match CVE Program withdrawal of this identifier

scope: Is the vulnerability ARMR's to address? first match wins

2 armr-patch-file no-match An ARMR patch file on disk for this CVE

3 armr-secure-rule-file no-match An ARMR security-rule template on disk for this CVE

4 manual-classification no-match A researcher's recorded decision for this specific CVE

5 manual classification no-match Manual classification of this CVE in the legacy dataset

6 non-java-upstream no-match A root cause in non-Java code: an OS kernel, a C library, or a bundled runtime

7 oracle-component no-match The defect being in a component of a tracked product the agent does not reach: JavaFX, the Java SE installer, the native WebLogic proxy plug-in. Oracle gives these no CPE of their own and names them only in the description.

8 osv-maven matched Queued for review Maven packages: org.apache.tomcat:tomcat-catalina

9 cna-maven-package not-reached An affected Maven artifact named by the CNA itself

10 known-cpe-product not-reached An NVD CPE naming a product ARMR tracks

11 cna-cpe-product not-reached A CPE the CNA published naming a tracked product. Oracle publishes these on advisory day, months before NVD.

12 oracle-advisory-family not-reached A tracked product family named in Oracle's own risk matrix. CPE cannot carry a suite name, only a module.

13 non-deployable-product not-reached The only affected product being a sealed appliance image, where Java runs but no -javaagent can be attached

14 unmatched-product not-reached No tracked product matched above, and none present at all

disposition: What do we do about one that is? cumulative: every rule gets a turn

15 patch-hint no-match A reference pointing at the upstream fix: a commit, a PR, a Red Hat bug

16 open-source-maven matched Mitigation candidate Open-source Maven artifact indexed by OSV (Maven packages: org.apache.tomcat:tomcat-catalina). The source is public, which makes an ARMR patch rule a candidate; nothing here establishes that one can be written.

17 poc-derivable skipped An indexed exploit to reverse-engineer, where there is no source to read

18 no-exploit skipped With no fix path, a public exploit, or a CISA record of one

19 secure-rule-match no-match A vulnerability class already blocked by an ARMR security rule

20 below-action-threshold no-match Severity is HIGH — only MEDIUM/LOW are deprioritized

21 no-exploit-published decided it matched No exploit published No working exploit has been published, and an upstream fix path does exist, so the remediation half of the candidacy still holds.

What the scope rules read

The products the record named, and whether known-products.yaml tracks them. This is the evidence the scope stage decided on.

Vendor Product Tracked CPE Source

redhat enterprise_linux_desktop not tracked cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*

redhat enterprise_linux_hpc_node not tracked cpe:2.3:o:redhat:enterprise_linux_hpc_node:7.0:*:*:*:*:*:*:*

redhat enterprise_linux_hpc_node_eus not tracked cpe:2.3:o:redhat:enterprise_linux_hpc_node_eus:7.2:*:*:*:*:*:*:*

redhat enterprise_linux_server not tracked cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*

redhat enterprise_linux_server_aus not tracked cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2:*:*:*:*:*:*:*

redhat enterprise_linux_server_eus not tracked cpe:2.3:o:redhat:enterprise_linux_server_eus:7.2:*:*:*:*:*:*:*

redhat enterprise_linux_server_tus not tracked cpe:2.3:o:redhat:enterprise_linux_server_tus:7.2:*:*:*:*:*:*:*

redhat enterprise_linux_workstation not tracked cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*

hp system_management_homepage not tracked cpe:2.3:a:hp:system_management_homepage:*:*:*:*:*:*:*:*

oracle linux not tracked cpe:2.3:o:oracle:linux:6:*:*:*:*:*:*:*

apache tomcat tracked cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* yaml

Raw stored JSON document for this CVE ↗ · NVD ↗ · CVE.org ↗