`CVE-2018-11784` Apache Tomcat

Affected software	Apache Tomcat
Severity	4.3 Medium CVSS 3.0 2 scores
Fixed in	`8.5.34`, `7.0.91`, `9.0.12`
Weakness	CWE-601
Published	4 Oct 2018
Updated	15 Oct 2026

Description

When the default servlet in Apache Tomcat versions 9.0.0.M1 to 9.0.11, 8.5.0 to 8.5.33 and 7.0.23 to 7.0.90 returned a redirect to a directory (e.g. redirecting to '/foo/' when the user requested '/foo') a specially crafted URL could be used to cause the redirect to be generated to any URI of the attackers choice.

Exploitation status

Working exploit published

A reviewed exploit catalogue lists ready-to-run exploit code for this CVE.

CISA KEV not listed
VulnCheck KEV not listed
CISA Vulnrichment exploitation: none
Indexed PoC 3 indexed Published artifacts you can open, in Exploit-DB, GitHub PoC, Nuclei; first seen 2021-07-13.
EPSS 98% chance in 30 days A model's forecast, not a report of exploitation. Higher than 99.9% of all scored CVEs.

1 of these are GitHub repositories with fewer than 5 stars. They are listed for reference and don't count toward the exploitation status above.

Index	Artifact	First seen
GitHub PoC	Apache Tomcat - Open Redirect	2024-05-27
Exploit-DB	Apache Tomcat 9.0.0.M1 - Open Redirect	2021-07-13
Nuclei	Apache Tomcat - Open Redirect

Index

Artifact

Stars

First seen

GitHub PoC

Apache Tomcat - Open Redirect

2024-05-27

Exploit-DB

Apache Tomcat 9.0.0.M1 - Open Redirect

2021-07-13

Nuclei

Apache Tomcat - Open Redirect

Waratek protection

Outside Waratek scope

A Java vulnerability, but not one Waratek protects. It affects only Java on a user's desktop (applets, Web Start, JavaFX, the installer), sits in a product the Waratek agent can't be installed into, or is in a package we don't expect in business applications. The decision below says which.

Protection none
Action not pursued none
Review human Researcher
Record active

Decided by	Manual classification of this CVE in the legacy dataset
Finding	A manual classification set this CVE's status to Outside Waratek scope, but the CVE names a tracked product.

Decided by

Manual classification of this CVE in the legacy dataset

Finding

A manual classification set this CVE's status to Outside Waratek scope, but the CVE names a tracked product.

CVSS

4.3 MEDIUM v3.0 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

Version Score Band Vector Assigner Type

CVSS 3.0 4.3 MEDIUM CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N NVD Primary published

CVSS 2.0 4.3 none AV:N/AC:M/Au:N/C:N/I:P/A:N NVD Primary

Version	Score	Band	Vector	Assigner	Type
CVSS 3.0	4.3	MEDIUM	`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N`	NVD	Primary	published
CVSS 2.0	4.3	none	`AV:N/AC:M/Au:N/C:N/I:P/A:N`	NVD	Primary

Affected software and releases

Oracle advisories

Advisory	Type	Quarter	Products Oracle names in its risk matrix
Oracle Critical Patch Update October 2019 ↗	CPU	2019-Q4	Oracle Database Server / WLM (Apache Tomcat) (12.2.0.1, 18c, 19c)
Oracle Critical Patch Update July 2019 ↗	CPU	2019-Q3	Oracle Retail Applications / Retail (Apache Tomcat) (10.8.0 - 10.8.3) Oracle Supply Chain Products Suite / Installation Issues (Apache Tomcat) (6.2.0, 6.2.1)
Oracle Critical Patch Update April 2019 ↗	CPU	2019-Q2	Oracle Construction and Engineering Suite / Core (Apache Tomcat) (17.1, 17.2, 17.3) Oracle Hospitality Applications / Base (Apache Tomcat) (4.2.0, 4.2.1) Oracle Retail Applications / System Administration (Apache Tomcat) (5.1, 5.2, 15.0) Oracle Retail Applications / Upgrade Install (Apache Tomcat) (5.1, 5.2, 15.0) Oracle Virtualization / Application Server (Apache Tomcat) (5.4)
Oracle Critical Patch Update January 2019 ↗	CPU	2019-Q1	Oracle Virtualization / Application Server (Apache Tomcat) (5.4)

Advisory

Type

Quarter

Products Oracle names in its risk matrix

Oracle Critical Patch Update October 2019 ↗

CPU

2019-Q4

Oracle Database Server / WLM (Apache Tomcat) (12.2.0.1, 18c, 19c)

Oracle Critical Patch Update July 2019 ↗

CPU

2019-Q3

Oracle Retail Applications / Retail (Apache Tomcat) (10.8.0 - 10.8.3)
Oracle Supply Chain Products Suite / Installation Issues (Apache Tomcat) (6.2.0, 6.2.1)

Oracle Critical Patch Update April 2019 ↗

CPU

2019-Q2

Oracle Construction and Engineering Suite / Core (Apache Tomcat) (17.1, 17.2, 17.3)
Oracle Hospitality Applications / Base (Apache Tomcat) (4.2.0, 4.2.1)
Oracle Retail Applications / System Administration (Apache Tomcat) (5.1, 5.2, 15.0)
Oracle Retail Applications / Upgrade Install (Apache Tomcat) (5.1, 5.2, 15.0)
Oracle Virtualization / Application Server (Apache Tomcat) (5.4)

Oracle Critical Patch Update January 2019 ↗

CPU

2019-Q1

Oracle Virtualization / Application Server (Apache Tomcat) (5.4)

Oracle components and versions

Family	Component	Versions, as Oracle lists them	Read as
Oracle Construction and Engineering Suite	Core (Apache Tomcat)	17.1, 17.2, 17.3	17.1 · 17.2 · 17.3
Oracle Database Server	WLM (Apache Tomcat)	12.2.0.1, 18c, 19c	12.2.0.1 · 18 · 19
Oracle Hospitality Applications	Base (Apache Tomcat)	4.2.0, 4.2.1	4.2.0 · 4.2.1
Oracle Retail Applications	Retail (Apache Tomcat)	10.8.0 - 10.8.3
Oracle Retail Applications	System Administration (Apache Tomcat)	5.1, 5.2, 15.0	5.1 · 5.2 · 15.0
Oracle Retail Applications	Upgrade Install (Apache Tomcat)	5.1, 5.2, 15.0	5.1 · 5.2 · 15.0
Oracle Supply Chain Products Suite	Installation Issues (Apache Tomcat)	6.2.0, 6.2.1	6.2.0 · 6.2.1
Oracle Virtualization	Application Server (Apache Tomcat)	5.4	5.4

Family

Component

Versions, as Oracle lists them

Read as

Oracle Construction and Engineering Suite

Core (Apache Tomcat)

17.1, 17.2, 17.3

17.1 · 17.2 · 17.3

Oracle Database Server

WLM (Apache Tomcat)

12.2.0.1, 18c, 19c

12.2.0.1 · 18 · 19

Oracle Hospitality Applications

Base (Apache Tomcat)

4.2.0, 4.2.1

4.2.0 · 4.2.1

Oracle Retail Applications

Retail (Apache Tomcat)

10.8.0 - 10.8.3

Oracle Retail Applications

System Administration (Apache Tomcat)

5.1, 5.2, 15.0

5.1 · 5.2 · 15.0

Oracle Retail Applications

Upgrade Install (Apache Tomcat)

5.1, 5.2, 15.0

5.1 · 5.2 · 15.0

Oracle Supply Chain Products Suite

Installation Issues (Apache Tomcat)

6.2.0, 6.2.1

6.2.0 · 6.2.1

Oracle Virtualization

Application Server (Apache Tomcat)

5.4

Maven packages

Affected and fixed versions, from OSV.dev

Package Introduced Fixed Last affected

org.apache.tomcat.embed:tomcat-embed-core 8.5.0 8.5.34 unbounded

org.apache.tomcat.embed:tomcat-embed-core 7.0.23 7.0.91 unbounded

org.apache.tomcat.embed:tomcat-embed-core 9.0.0 9.0.12 unbounded

Package	Introduced	Fixed	Last affected
`org.apache.tomcat.embed:tomcat-embed-core`	8.5.0	`8.5.34`	unbounded
`org.apache.tomcat.embed:tomcat-embed-core`	7.0.23	`7.0.91`	unbounded
`org.apache.tomcat.embed:tomcat-embed-core`	9.0.0	`9.0.12`	unbounded

Products and versions

16 products, 56 version entries

Source	Vendor	Product	Scheme	Affected versions
nvd	apache	tomcat	generic	≥ 7.0.23 and ≤ 7.0.90 · ≥ 8.5.0 and ≤ 8.5.33 · 9.0.0 · 9.0.0:milestone1 · 9.0.0:milestone10 · 9.0.0:milestone11 · 9.0.0:milestone12 · 9.0.0:milestone13 · 9.0.0:milestone14 · 9.0.0:milestone15 · 9.0.0:milestone16 · 9.0.0:milestone17 · 9.0.0:milestone18 · 9.0.0:milestone19 · 9.0.0:milestone2 · 9.0.0:milestone20 · 9.0.0:milestone21 · 9.0.0:milestone22 · 9.0.0:milestone23 · 9.0.0:milestone24 · 9.0.0:milestone25 · 9.0.0:milestone26 · 9.0.0:milestone27 · 9.0.0:milestone3 · 9.0.0:milestone4 · 9.0.0:milestone5 · 9.0.0:milestone6 · 9.0.0:milestone7 · 9.0.0:milestone8 · 9.0.0:milestone9 · ≥ 9.0.1 and ≤ 9.0.11
nvd	canonical	ubuntu linux	generic	14.04 · 16.04
nvd	debian	debian linux	generic	8.0
nvd	netapp	snap creator framework	generic	any version
nvd	oracle	communications application session controller	generic	3.7.1 · 3.8.0
nvd	oracle	hospitality guest access	generic	4.2.0 · 4.2.1
nvd	oracle	instantis enterprisetrack	generic	17.1 · 17.2 · 17.3
nvd	oracle	retail order broker	generic	5.1 · 5.2 · 15.0
nvd	oracle	secure global desktop	generic	5.4
osv	org.apache.tomcat.embed	tomcat-embed-core	generic	≥ 7.0.23 and ＜ 7.0.91 · ≥ 8.5.0 and ＜ 8.5.34 · ≥ 9.0.0 and ＜ 9.0.12
nvd	redhat	enterprise linux desktop	generic	7.0
nvd	redhat	enterprise linux server	generic	7.0 · 7.6
nvd	redhat	enterprise linux server aus	generic	7.6
nvd	redhat	enterprise linux server eus	generic	7.6
nvd	redhat	enterprise linux server tus	generic	7.6
nvd	redhat	enterprise linux workstation	generic	7.0

Source

Vendor

Product

Scheme

Affected versions

nvd

apache

tomcat

generic

≥ 7.0.23 and ≤ 7.0.90 · ≥ 8.5.0 and ≤ 8.5.33 · 9.0.0 · 9.0.0:milestone1 · 9.0.0:milestone10 · 9.0.0:milestone11 · 9.0.0:milestone12 · 9.0.0:milestone13 · 9.0.0:milestone14 · 9.0.0:milestone15 · 9.0.0:milestone16 · 9.0.0:milestone17 · 9.0.0:milestone18 · 9.0.0:milestone19 · 9.0.0:milestone2 · 9.0.0:milestone20 · 9.0.0:milestone21 · 9.0.0:milestone22 · 9.0.0:milestone23 · 9.0.0:milestone24 · 9.0.0:milestone25 · 9.0.0:milestone26 · 9.0.0:milestone27 · 9.0.0:milestone3 · 9.0.0:milestone4 · 9.0.0:milestone5 · 9.0.0:milestone6 · 9.0.0:milestone7 · 9.0.0:milestone8 · 9.0.0:milestone9 · ≥ 9.0.1 and ≤ 9.0.11

nvd

canonical

ubuntu linux

generic

14.04 · 16.04

nvd

debian

debian linux

generic

8.0

nvd

netapp

snap creator framework

generic

any version

nvd

oracle

communications application session controller

generic

3.7.1 · 3.8.0

nvd

oracle

hospitality guest access

generic

4.2.0 · 4.2.1

nvd

oracle

instantis enterprisetrack

generic

17.1 · 17.2 · 17.3

nvd

oracle

retail order broker

generic

5.1 · 5.2 · 15.0

nvd

oracle

secure global desktop

generic

5.4

osv

org.apache.tomcat.embed

tomcat-embed-core

generic

≥ 7.0.23 and ＜ 7.0.91 · ≥ 8.5.0 and ＜ 8.5.34 · ≥ 9.0.0 and ＜ 9.0.12

nvd

redhat

enterprise linux desktop

generic

7.0

nvd

redhat

enterprise linux server

generic

7.0 · 7.6

nvd

redhat

enterprise linux server aus

generic

7.6

nvd

redhat

enterprise linux server eus

generic

7.6

nvd

redhat

enterprise linux server tus

generic

7.6

nvd

redhat

enterprise linux workstation

generic

7.0

Earlier manual review

A reviewer classified this CVE in an older dataset. We kept the labels and products below, but not the reviewer's reasoning.

## Manual Classification Context **Labels:** HTTP, BASE (APACHE TOMCAT), INSTALLATION ISSUES (APACHE TOMCAT), SYSTEM ADMINISTRATION (APACHE TOMCAT), UPGRADE INSTALL (APACHE TOMCAT), CORE (APACHE TOMCAT), APPLICATION SERVER (APACHE TOMCAT), NO AUTH REMOTE EXPLOIT, RETAIL (APACHE TOMCAT) **Products:** MICROS RETAIL XBRI LOSS PREVENTION, ORACLE SECURE GLOBAL DESKTOP (SGD), ORACLE CONSTRUCTION AND ENGINEERING SUITE, ORACLE AGILE ENGINEERING DATA MANAGEMENT, ORACLE VIRTUALIZATION, TOMCAT, ORACLE HOSPITALITY APPLICATIONS, ORACLE HOSPITALITY GUEST ACCESS, INSTANTIS ENTERPRISETRACK, ORACLE RETAIL APPLICATIONS, ORACLE SECURE GLOBAL DESKTOP, ORACLE DATABASE SERVER, WLM (APACHE TOMCAT), ORACLE RETAIL ORDER BROKER, ORACLE SUPPLY CHAIN PRODUCTS SUITE

References

URL	Tags
https://github.com/apache/tomcat/commit/b76e1dfb3dec3789cc700f8d022c872eb947a221	WEB
https://github.com/apache/tomcat/commit/efb860b3ff8ebcf606199b8d0d432f76898040da	WEB
https://github.com/apache/tomcat/commit/f9f147359b7c95511b64cd99bbc47917c01b3879	WEB
https://lists.debian.org/debian-lts-announce/2018/10/msg00005.html	WEB
https://lists.apache.org/thread.html/raba0fabaf4d56d4325ab2aca8814f0b30a237ab83d8106b115ee279a@%3Cdev.tomcat.apache.org%3E	WEB
https://lists.apache.org/thread.html/raba0fabaf4d56d4325ab2aca8814f0b30a237ab83d8106b115ee279a%40%3Cdev.tomcat.apache.org%3E	WEB
https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c@%3Cdev.tomcat.apache.org%3E	WEB
https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.org%3E	WEB
https://lists.apache.org/thread.html/r6ccee4e849bc77df0840c7f853f6bd09d426f6741247da2b7429d5d9@%3Cdev.tomcat.apache.org%3E	WEB
https://lists.apache.org/thread.html/r6ccee4e849bc77df0840c7f853f6bd09d426f6741247da2b7429d5d9%40%3Cdev.tomcat.apache.org%3E	WEB

URL

Timeline

Published	2018-10-04	By the CVE Program.
NVD record modified	2026-10-15	NVD's own last-modified date for this record.

Published

2018-10-04

By the CVE Program.

NVD record modified

2026-10-15

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

How VRT decided (5 of 24 rules ran)

5 of 24 rules ran. The rest didn't run because an earlier rule had already settled the CVE.

# Rule Outcome Status Detail

identity: Does this identifier describe a vulnerability at all? the first rule that matches decides

1 rejected no match CVE Program withdrawal of this identifier

scope: Is it a vulnerability Waratek protects? the first rule that matches decides

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 decided it matched Outside Waratek scope Found in legacy manual classifications

6 non-java-upstream not reached A root cause in non-Java code: an OS kernel, a C library, or a bundled runtime

7 oracle-component not reached The defect being in a component of a tracked product the agent does not reach: JavaFX, the Java SE installer, the JInitiator browser plug-in, the native WebLogic proxy plug-in, or a native part of Oracle Application Server or Collaboration Suite (HTTP Server, Web Cache, Internet Directory, mail and calendar servers). Oracle gives these no CPE of their own and names them only in the description.

8 java-client-side not reached Oracle's own risk-matrix note saying the CVE is reached only through untrusted code in the Java sandbox (applets, Web Start) or only through a client installation of Java, so a server running its own trusted code is not exposed

9 osv-maven not reached An OSV.dev record of this CVE affecting a package published to Maven Central. When every such package is one business applications do not use (Minecraft mods and launchers, Fastjson) and no tracked product is named by CPE, it settles the CVE as Outside Waratek scope instead

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

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

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

13 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.

14 cna-named-product not reached A tracked product named in words by the CVE's own CNA, on a record with no CPE yet. Apache and Eclipse publish these on advisory day, before NVD adds CPE data.

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

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

disposition: What do we do about one that is? every rule runs

17 patch-hint not reached A reference pointing at the upstream fix: a commit, a PR, a Red Hat bug

18 open-source-maven not reached The affected package being open source on Maven, so the fix can be read

19 poc-derivable not reached An indexed exploit clearing the evidence bar to reverse-engineer, where there is no source to read

20 no-exploit not reached Nothing to build a rule from yet: no published exploit, no CISA record of exploitation and no source-level change to read

21 secure-rule-match not reached A vulnerability class already blocked by an ARMR security rule

22 exploited-no-fix-or-poc not reached Somebody exploiting this CVE (a CISA or VulnCheck KEV listing, or a CISA verdict of active exploitation), with no fix, source code or PoC to build a rule from

23 below-action-threshold not reached Medium or Low severity, no CISA or VulnCheck KEV listing, no PoC clearing the evidence bar, no CISA verdict, no Oracle advisory

24 no-exploit-published not reached Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all

NVD ↗ · CVE.org ↗