---
title: "CVE-2018-11759: Apache Tomcat Connectors vulnerability | CubePath"
description: "The Apache Web Server (httpd) specific code that normalised the requested path before matching it to the URI-worker map in Apache Tomcat JK (mod_jk)…"
language: en
source: https://cubepath.com/security/cve/CVE-2018-11759
---

# CVE-2018-11759: Apache Tomcat Connectors vulnerability | CubePath

## Description

The Apache Web Server (httpd) specific code that normalised the requested path before matching it to the URI-worker map in Apache Tomcat JK (mod\_jk) Connector 1.2.0 to 1.2.44 did not handle some edge cases correctly. If only a sub-set of the URLs supported by Tomcat were exposed via httpd, then it was possible for a specially constructed request to expose application functionality through the reverse proxy that was not intended for clients accessing the application via the reverse proxy. It was also possible in some configurations for a specially constructed request to bypass the access controls configured in httpd. While there is some overlap between this issue and CVE-2018-1323, they are not identical.

Official description from the CVE record, published by apache. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2018-11759)

## Key data

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.90647 (90.6% probability)

Percentile

99.8%

Scores of

Nov 10, 2026

Model

v2026.06.15

## Affected products

Products listed in the CVE record, as the CNA published them.

- Apache Tomcat Connectors

  - affected: Apache Tomcat JK (mod\_jk) Connector 1.2.0 to 1.2.44

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [DSA-4357](https://www.debian.org/security/2018/dsa-4357)  (debian.org) vendor-advisory
- [RHSA-2019:0367](https://access.redhat.com/errata/RHSA-2019:0367)  (access.redhat.com) vendor-advisory
- [105888](http://www.securityfocus.com/bid/105888)  (securityfocus.com) vdb-entry
- [lists.apache.org/thread.html/6d564bb0ab73d6b3efdd1d6b1c075d…](https://lists.apache.org/thread.html/6d564bb0ab73d6b3efdd1d6b1c075d1a2c84ecd84a4159d6122529ad%40%3Cannounce.tomcat.apache.org%3E)
- [\[debian-lts-announce\] 20181217 \[SECURITY\] \[DLA 1609-1\] libapache-mod-jk security update](https://lists.debian.org/debian-lts-announce/2018/12/msg00007.html)  (lists.debian.org) mailing-list
- [RHSA-2019:0366](https://access.redhat.com/errata/RHSA-2019:0366)  (access.redhat.com) vendor-advisory
- [\[tomcat-dev\] 20190319 svn commit: r1855831 \[26/30\] - in /tomcat/site/trunk: ./ docs/ xdocs/](https://lists.apache.org/thread.html/ba661b0edd913b39ff129a32d855620dd861883ade05fd88a8ce517d%40%3Cdev.tomcat.apache.org%3E)  (lists.apache.org) mailing-list
- [\[tomcat-dev\] 20190325 svn commit: r1856174 \[25/29\] - in /tomcat/site/trunk: docs/ xdocs/ xdocs/stylesheets/](https://lists.apache.org/thread.html/8d2a579bbd977c225c70cb23b0ec54865fb0dab5da3eff1e060c9935%40%3Cdev.tomcat.apache.org%3E)  (lists.apache.org) mailing-list
- [\[tomcat-dev\] 20190413 svn commit: r1857494 \[18/20\] - in /tomcat/site/trunk: ./ docs/ xdocs/](https://lists.apache.org/thread.html/277d42b48b6e9aef50949c0dcc79ce21693091d73da246b3c1981925%40%3Cdev.tomcat.apache.org%3E)  (lists.apache.org) mailing-list
- [\[tomcat-dev\] 20190415 svn commit: r1857582 \[20/22\] - in /tomcat/site/trunk: docs/ xdocs/stylesheets/](https://lists.apache.org/thread.html/5b7a23e245c93235c503900da854a143596d901bf1a1f67e851a5de4%40%3Cdev.tomcat.apache.org%3E)  (lists.apache.org) mailing-list
- [oracle.com/security-alerts/cpujan2020.html](https://www.oracle.com/security-alerts/cpujan2020.html)
- [\[tomcat-dev\] 20200203 svn commit: r1873527 \[26/30\] - /tomcat/site/trunk/docs/](https://lists.apache.org/thread.html/rf8e8c091182b45daa50d3557cad9b10bb4198e3f08cf8f1c66a1b08d%40%3Cdev.tomcat.apache.org%3E)  (lists.apache.org) mailing-list
- [\[tomcat-dev\] 20200213 svn commit: r1873980 \[30/34\] - /tomcat/site/trunk/docs/](https://lists.apache.org/thread.html/r5c616dfc49156e4b06ffab842800c80f4425924d0f20c452c127a53c%40%3Cdev.tomcat.apache.org%3E)  (lists.apache.org) mailing-list

## Timeline

1. ID reserved Jun 5, 2018
2. Record published Oct 31, 2018
3. Record last updated Aug 5, 2024

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:00 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)