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CVE-2018-11784· NVD / CVE Program· CNA apache

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 directo

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.

MediumCVSS 4.3 · v3.0—Proof of concept Fix available
Published
Oct 4, 2018
Updated
Jun 16, 2026
EPSS
97.7% · 100th percentile
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Action score

46

Plan

Add it to your regular patch cycle.

CVSS
17 / 40 · 4.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
29 / 30 · 97.7%

Affected systems

VendorProduct
apachetomcat
debiandebian linux
canonicalubuntu linux
netappsnap creator framework
redhatenterprise linux desktop
redhatenterprise linux server
redhatenterprise linux server aus
redhatenterprise linux server eus
redhatenterprise linux server tus
redhatenterprise linux workstation
oraclecommunications application session controller
oraclehospitality guest access

and 3 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • apache tomcat8.5.0 and later · up to 8.5.33 inclusive
  • apache tomcat9.0.1 and later · up to 9.0.11 inclusive
  • apache tomcat7.0.23 and later · up to 7.0.90 inclusive
  • apache tomcat9.0.0
  • canonical ubuntu linux14.04
  • canonical ubuntu linux16.04
  • debian debian linux8.0
  • netapp snap creator frameworkall versions
  • oracle communications application session controller3.7.1
  • oracle communications application session controller3.8.0
  • oracle hospitality guest access4.2.0
  • oracle hospitality guest access4.2.1
  • oracle instantis enterprisetrack17.1
  • oracle instantis enterprisetrack17.2
  • oracle instantis enterprisetrack17.3
  • oracle retail order broker15.0
  • oracle retail order broker5.1
  • oracle retail order broker5.2
  • oracle secure global desktop5.4
  • redhat enterprise linux desktop7.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (apache). Independent of NVD's CPE analysis and usually ahead of it.

  • Apache Software Foundation Apache Tomcat

    • 9.0.0.M1 to 9.0.11, 8.5.0 to 8.5.33, 7.0.23 to 7.0.90affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:8apache-commons-collectionsbefore 3.2.2-10.module_el8.5.0+2577+9e95fe003.2.2-10.module_el8.5.0+2577+9e95fe00
AlmaLinux:8apache-commons-collectionsbefore 3.2.2-10.module_el8.5.0+150+5f0dbea03.2.2-10.module_el8.5.0+150+5f0dbea0
AlmaLinux:8apache-commons-langbefore 2.6-21.module_el8.5.0+2577+9e95fe002.6-21.module_el8.5.0+2577+9e95fe00
AlmaLinux:8apache-commons-langbefore 2.6-21.module_el8.5.0+150+5f0dbea02.6-21.module_el8.5.0+150+5f0dbea0
AlmaLinux:8bea-stax-apibefore 1.2.0-16.module_el8.5.0+2577+9e95fe001.2.0-16.module_el8.5.0+2577+9e95fe00
AlmaLinux:8bea-stax-apibefore 1.2.0-16.module_el8.5.0+150+5f0dbea01.2.0-16.module_el8.5.0+150+5f0dbea0
AlmaLinux:8glassfish-fastinfosetbefore 1.2.13-9.module_el8.5.0+150+5f0dbea01.2.13-9.module_el8.5.0+150+5f0dbea0
AlmaLinux:8glassfish-fastinfosetbefore 1.2.13-9.module_el8.5.0+2577+9e95fe001.2.13-9.module_el8.5.0+2577+9e95fe00
AlmaLinux:8glassfish-jaxb-apibefore 2.2.12-8.module_el8.5.0+2577+9e95fe002.2.12-8.module_el8.5.0+2577+9e95fe00
AlmaLinux:8glassfish-jaxb-apibefore 2.2.12-8.module_el8.5.0+150+5f0dbea02.2.12-8.module_el8.5.0+150+5f0dbea0
AlmaLinux:8glassfish-jaxb-corebefore 2.2.11-11.module_el8.5.0+2577+9e95fe002.2.11-11.module_el8.5.0+2577+9e95fe00
AlmaLinux:8glassfish-jaxb-corebefore 2.2.11-11.module_el8.5.0+150+5f0dbea02.2.11-11.module_el8.5.0+150+5f0dbea0
AlmaLinux:8glassfish-jaxb-runtimebefore 2.2.11-11.module_el8.5.0+2577+9e95fe002.2.11-11.module_el8.5.0+2577+9e95fe00
AlmaLinux:8glassfish-jaxb-runtimebefore 2.2.11-11.module_el8.5.0+150+5f0dbea02.2.11-11.module_el8.5.0+150+5f0dbea0
AlmaLinux:8glassfish-jaxb-txw2before 2.2.11-11.module_el8.5.0+2577+9e95fe002.2.11-11.module_el8.5.0+2577+9e95fe00
AlmaLinux:8glassfish-jaxb-txw2before 2.2.11-11.module_el8.5.0+150+5f0dbea02.2.11-11.module_el8.5.0+150+5f0dbea0
AlmaLinux:8jackson-module-jaxb-annotationsbefore 2.7.6-4.module_el8.5.0+150+5f0dbea02.7.6-4.module_el8.5.0+150+5f0dbea0
AlmaLinux:8jackson-module-jaxb-annotationsbefore 2.7.6-4.module_el8.5.0+2577+9e95fe002.7.6-4.module_el8.5.0+2577+9e95fe00
AlmaLinux:8jakarta-commons-httpclientbefore 1:3.1-28.module_el8.5.0+150+5f0dbea01:3.1-28.module_el8.5.0+150+5f0dbea0
AlmaLinux:8jakarta-commons-httpclientbefore 1:3.1-28.module_el8.5.0+2577+9e95fe001:3.1-28.module_el8.5.0+2577+9e95fe00
AlmaLinux:8javassistbefore 3.18.1-8.module_el8.5.0+150+5f0dbea03.18.1-8.module_el8.5.0+150+5f0dbea0
AlmaLinux:8javassistbefore 3.18.1-8.module_el8.5.0+2577+9e95fe003.18.1-8.module_el8.5.0+2577+9e95fe00
AlmaLinux:8javassist-javadocbefore 3.18.1-8.module_el8.5.0+2577+9e95fe003.18.1-8.module_el8.5.0+2577+9e95fe00
AlmaLinux:8javassist-javadocbefore 3.18.1-8.module_el8.5.0+150+5f0dbea03.18.1-8.module_el8.5.0+150+5f0dbea0

+96

Other highest-scoring records for the same primary product.

  • CVE-2025-24813Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUTKEV
    99Now
  • CVE-2016-8735Remote code execution is possible with Apache Tomcat before 6.0.48, 7.x before 7.0.73, 8.x before 8.0.39, 8.5.x before 8.5.7, and 9.x beforeKEV
    96Now
  • CVE-2017-12617When running Apache Tomcat versions 9.0.0.M1 to 9.0.0, 8.5.0 to 8.5.22, 8.0.0.RC1 to 8.0.46 and 7.0.0 to 7.0.81 with HTTP PUTs enabled (e.g.KEV
    92Now
  • CVE-2017-12615When running Apache Tomcat 7.0.0 to 7.0.79 on Windows with HTTP PUTs enabled (e.g.KEV
    92Now
  • CVE-2026-34486Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptorKEV
    62This week
  • CVE-2019-0232When running on Windows with enableCmdLineArguments enabled, the CGI Servlet in Apache Tomcat 9.0.0.M1 to 9.0.17, 8.5.0 to 8.5.39 and 7.0.0
    62This week

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
almalinux:apache-commons-collections3.2.2-10.module_el8.5.0+2577+9e95fe00 · AlmaLinux:8Package registry (OSV)
almalinux:apache-commons-lang2.6-21.module_el8.5.0+150+5f0dbea0 · AlmaLinux:8Package registry (OSV)
almalinux:bea-stax-api1.2.0-16.module_el8.5.0+150+5f0dbea0 · AlmaLinux:8Package registry (OSV)
almalinux:glassfish-fastinfoset1.2.13-9.module_el8.5.0+150+5f0dbea0 · AlmaLinux:8Package registry (OSV)
almalinux:glassfish-jaxb-api2.2.12-8.module_el8.5.0+2577+9e95fe00 · AlmaLinux:8Package registry (OSV)
almalinux:glassfish-jaxb-core2.2.11-11.module_el8.5.0+150+5f0dbea0 · AlmaLinux:8Package registry (OSV)
almalinux:glassfish-jaxb-runtime2.2.11-11.module_el8.5.0+2577+9e95fe00 · AlmaLinux:8Package registry (OSV)
almalinux:glassfish-jaxb-txw22.2.11-11.module_el8.5.0+2577+9e95fe00 · AlmaLinux:8Package registry (OSV)
almalinux:jackson-module-jaxb-annotations2.7.6-4.module_el8.5.0+150+5f0dbea0 · AlmaLinux:8Package registry (OSV)
almalinux:jakarta-commons-httpclient1:3.1-28.module_el8.5.0+2577+9e95fe00 · AlmaLinux:8Package registry (OSV)
almalinux:javassist3.18.1-8.module_el8.5.0+150+5f0dbea0 · AlmaLinux:8Package registry (OSV)
almalinux:javassist-javadoc3.18.1-8.module_el8.5.0+2577+9e95fe00 · AlmaLinux:8Package registry (OSV)
debian:tomcat77.0.56-3+really7.0.91-1 · Debian:8Package registry (OSV)
debian:tomcat88.0.14-1+deb8u14 · Debian:8Package registry (OSV)
Maven:org.apache.tomcat.embed:tomcat-embed-core7.0.91Package registry (OSV)
Maven:org.apache.tomcat.embed:tomcat-embed-core8.5.34Package registry (OSV)
Maven:org.apache.tomcat.embed:tomcat-embed-core9.0.12Package registry (OSV)
opensuse:tomcat9.0.36-8.4 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:tomcat1010.1.14-1.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:virtualbox5.2.24-lp150.4.33.1 · openSUSE:Leap 15.0Package registry (OSV)
red hat:jws5-tomcat0:9.0.7-12.redhat_12.1.el6jws · Red Hat:jboss_enterprise_web_server:5.0::el6Package registry (OSV)
red hat:jws5-tomcat-admin-webapps0:9.0.7-12.redhat_12.1.el6jws · Red Hat:jboss_enterprise_web_server:5.0::el6Package registry (OSV)
red hat:jws5-tomcat-docs-webapp0:9.0.7-12.redhat_12.1.el6jws · Red Hat:jboss_enterprise_web_server:5.0::el6Package registry (OSV)
red hat:jws5-tomcat-el-3.0-api0:9.0.7-12.redhat_12.1.el6jws · Red Hat:jboss_enterprise_web_server:5.0::el6Package registry (OSV)
red hat:jws5-tomcat-javadoc0:9.0.7-12.redhat_12.1.el6jws · Red Hat:jboss_enterprise_web_server:5.0::el6Package registry (OSV)
red hat:jws5-tomcat-jsp-2.3-api0:9.0.7-12.redhat_12.1.el6jws · Red Hat:jboss_enterprise_web_server:5.0::el6Package registry (OSV)
red hat:jws5-tomcat-jsvc0:9.0.7-12.redhat_12.1.el6jws · Red Hat:jboss_enterprise_web_server:5.0::el6Package registry (OSV)
red hat:jws5-tomcat-lib0:9.0.7-12.redhat_12.1.el6jws · Red Hat:jboss_enterprise_web_server:5.0::el6Package registry (OSV)
red hat:jws5-tomcat-selinux0:9.0.7-12.redhat_12.1.el6jws · Red Hat:jboss_enterprise_web_server:5.0::el6Package registry (OSV)
red hat:jws5-tomcat-servlet-4.0-api0:9.0.7-12.redhat_12.1.el6jws · Red Hat:jboss_enterprise_web_server:5.0::el6Package registry (OSV)

+16

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Exploit-DB entry ×1
  • Nuclei detection template ×1
  • Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Exploit-DB entrywebapps2021-07-13
Nuclei detection templateNuclei template CVE-2018-11784 —
Proof-of-concept repository on GitHubstars:02024-05-27

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. First PoC+1013 d
  3. TodaySep 30, 2026+2918 d
EPSS, last 120 days+3% in 7 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
low · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
None
Integrity impact
Low
Availability impact
None

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records