CVE-2018-11759

mediumpriority · attend · 72EPSS 0.906 · 100 %ileexploit · PoCDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

3 exploits · PoC

Likely / severe?

90.6% (100th) EPSS

CVSS 5 · medium

Is it mine?

13 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Hsecondary · CVSS-BT (t0sche)

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondary · FSTEC (BDU) RU

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-22USprimaryCWE-22US

exploits (3)

Public proof-of-concept and weaponised exploit code.

Jul10l1r4/Identificador-CVE-2018-11759This exploit for CVE 2018-11759, vulnerability in apache mod_jk, module for load-balancerPoC · poc_in_github
immunIT/CVE-2018-11759Proof of concept showing how to exploit the CVE-2018-11759PoC · poc_in_github
julioliraup/Identificador-CVE-2018-11759julioliraup/Identificador-CVE-2018-11759PoC · poc_in_github

affected products (13)

Products and version ranges known to be affected.

Apache Tomcat JK Connector 1.2.46all versionscert_bundDEcpe:/a:apache:tomcat:jk_connector_1.2.46
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
Apache Software Foundation Apache Tomcat Connectors≤ Apache Tomcat JK (mod_jk) Connector 1.2.0 to 1.2.44enisa_euvdEU
Apache Software Foundation Tomcat JK Connector1.2.0 → 1.2.44fstec_bduRU
Oracle Corp. Sun ZFS Storage Appliance Kit≤ 8.8.6fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 9fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 8fstec_bduRU
apache tomcat jk connector1.2.0 → 1.2.44nvdUScpe:2.3:a:apache:tomcat_jk_connector:*:*:*:*:*:*:*:*
debian debian linux= 8.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
debian debian linux= 9.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
redhat jboss core servicesall versionsnvdUScpe:2.3:a:redhat:jboss_core_services:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-2984Apache Tomcat JK Connector: Schwachstelle ermöglicht Umgehen von SicherheitsvorkehrungenDeutsch2018-10-31csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Apache Tomcat JK Connector ausnutzen, um Sicherheitsvorkehrungen zu umgehen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund nvd NVD CVE.org MITRE

published 2018-10-31modified 2026-06-17

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+12523 more

references (46)

External citations — patches, advisories, analysis.

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