CVE-2019-17569

mediumpriority · track · 22EPSS 0.089 · 95 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

8.87% (95th) EPSS

CVSS 5.8 · medium

Is it mine?

91 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-22

The refactoring present in Apache Tomcat 9.0.28 to 9.0.30, 8.5.48 to 8.5.50 and 7.0.98 to 7.0.99 introduced a regression. The result of the regression was that invalid Transfer-Encoding headers were incorrectly processed leading to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered unlikely.

cvss

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

5.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.05.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 4.9

v3.14.8mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.2 · impact 2.5

v3.14.8mediumAV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:Nsecondary · FSTEC (BDU) RU

v3.14.8mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:Nsecondary · OSV

v3.14.4mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-444USprimaryCWE-444USCWE-444US

affected products (91)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Avaya Aura Application Enablement Servicesall versionscert_bundDEcpe:/a:avaya:aura_application_enablement_services:-
Avaya Aura Experience Portalall versionscert_bundDEcpe:/a:avaya:aura_experience_portal:-
Avaya CMSall versionscert_bundDEcpe:/a:avaya:call_management_system_server:-
Avaya Session Border Controllerall versionscert_bundDEcpe:/h:avaya:session_border_controller:-
Avaya one-Xall versionscert_bundDEcpe:/a:avaya:one-x:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
EMC NetWorkerall versionscert_bundDEcpe:/a:emc:networker:-
HPE HP-UXall versionscert_bundDEcpe:/o:hp:hp-ux:-
Open Source CentOSall versionscert_bundDEcpe:/o:centos:centos:-
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
Apache Apache Tomcat≤ 7.0.98 to 7.0.99enisa_euvdEU
Apache Apache Tomcat≤ 8.5.48 to 8.5.50enisa_euvdEU
Apache Apache Tomcat≤ Apache Tomcat 9.0.28 to 9.0.30enisa_euvdEU
Apache Software Foundation Tomcat7.0.98 → 7.0.99fstec_bduRU
Apache Software Foundation Tomcat8.5.48 → 8.5.50fstec_bduRU
Apache Software Foundation Tomcat9.0.28 → 9.0.30fstec_bduRU

showing 20 of 91

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-2130Apache Tomcat: Mehrere SchwachstellenDeutsch2020-02-25csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Apache Tomcat ausnutzen, um Dateien zu manipulieren und Informationen offenzulegen.
GHSA-767j-jfh2-jvrcPotential HTTP request smuggling in Apache Tomcat2020-02-28ghsa · osvUS
The refactoring present in Apache Tomcat versions 9.0.28 to 9.0.30, 8.5.48 to 8.5.50 and 7.0.98 to 7.0.99 introduced a regression. The result of the regression was that invalid Transfer-Encoding headers were incorrectly processed leading to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered unlikely.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund osv NVD CVE.org MITRE

published 2020-02-24modified 2026-06-17

related (546)

Related entries.

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+541 more

references (54)

External citations — patches, advisories, analysis.

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