High severity7.5NVD Advisory· Published Jul 14, 2020· Updated Jun 17, 2026

CVE-2020-13934

Description

An h2c direct connection to Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M5 to 9.0.36 and 8.5.1 to 8.5.56 did not release the HTTP/1.1 processor after the upgrade to HTTP/2. If a sufficient number of such requests were made, an OutOfMemoryException could occur leading to a denial of service.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
org.apache.tomcat:tomcatMaven	>= 10.0.0-M1, < 10.0.0-M6	10.0.0-M6
org.apache.tomcat:tomcatMaven	>= 9.0.0.M5, < 9.0.36	9.0.36
org.apache.tomcat:tomcatMaven	>= 8.5.1, < 8.5.56	8.5.56
org.apache.tomcat:tomcat-coyoteMaven	>= 10.0.0-M1, < 10.0.0-M6	10.0.0-M6
org.apache.tomcat:tomcat-coyoteMaven	>= 9.0.0.M5, < 9.0.36	9.0.36
org.apache.tomcat:tomcat-coyoteMaven	>= 8.5.1, < 8.5.56	8.5.56

Affected products

osv-coords19 versions
pkg:rpm/opensuse/tomcat10&distro=openSUSE%20Tumbleweed pkg:rpm/suse/tomcat&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5 pkg:rpm/suse/tomcat&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015 pkg:rpm/suse/tomcat&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSS pkg:rpm/suse/tomcat&distro=SUSE%20OpenStack%20Cloud%209 pkg:rpm/suse/tomcat&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSS pkg:rpm/suse/tomcat&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5 pkg:bitnami/tomcat pkg:rpm/suse/tomcat&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4 pkg:rpm/suse/tomcat&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSS pkg:rpm/suse/tomcat&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5 pkg:rpm/suse/tomcat&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOS pkg:rpm/suse/tomcat&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSS pkg:rpm/suse/tomcat&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Web%20and%20Scripting%2015%20SP1 pkg:rpm/suse/tomcat&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Web%20and%20Scripting%2015%20SP2 pkg:rpm/suse/tomcat&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209 pkg:rpm/opensuse/tomcat&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/tomcat&distro=openSUSE%20Leap%2015.1 pkg:rpm/opensuse/tomcat&distro=openSUSE%20Tumbleweed
< 10.1.14-1.1+ 18 more
- (no CPE)range: < 10.1.14-1.1
- (no CPE)range: < 9.0.36-3.45.1
- (no CPE)range: < 9.0.36-3.65.2
- (no CPE)range: < 9.0.36-3.65.2
- (no CPE)range: < 9.0.36-3.45.1
- (no CPE)range: < 9.0.115-3.160.1
- (no CPE)range: < 9.0.115-3.160.1
- (no CPE)range: >= 8.5.1, < 8.5.57
- (no CPE)range: < 9.0.36-3.45.1
- (no CPE)range: < 9.0.36-3.45.1
- (no CPE)range: < 9.0.36-3.45.1
- (no CPE)range: < 9.0.36-3.65.2
- (no CPE)range: < 9.0.36-3.65.2
- (no CPE)range: < 9.0.36-4.41.2
- (no CPE)range: < 9.0.36-3.6.1
- (no CPE)range: < 9.0.36-3.45.1
- (no CPE)range: < 9.0.36-lp152.2.4.1
- (no CPE)range: < 9.0.36-lp151.3.27.1
- (no CPE)range: < 9.0.43-8.1
Apache/Tomcatllm-fuzzy32 versions
10.0.0-M1 to 10.0.0-M6, 9.0.0.M5 to 9.0.36 and 8.5.1 to 8.5.56+ 31 more
- (no CPE)range: 10.0.0-M1 to 10.0.0-M6, 9.0.0.M5 to 9.0.36 and 8.5.1 to 8.5.56
- (no CPE)range: Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M5 to 9.0.36, 8.5.1 to 8.5.56
- cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*range: >=8.5.1,<=8.5.56
- cpe:2.3:a:apache:tomcat:9.0.0:milestone10:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone11:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone12:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone13:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone14:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone15:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone16:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone17:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone18:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone19:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone20:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone21:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone22:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone23:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone24:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone25:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone26:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone27:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone5:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone6:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone7:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone8:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:9.0.0:milestone9:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:10.0.0:milestone1:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:10.0.0:milestone2:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:10.0.0:milestone3:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:10.0.0:milestone4:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:10.0.0:milestone5:*:*:*:*:*:*
- cpe:2.3:a:apache:tomcat:10.0.0:milestone6:*:*:*:*:*:*
Debian/linux2 versions
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
NetApp/Oncommand System Manager
cpe:2.3:a:netapp:oncommand_system_manager:*:*:*:*:*:*:*:*
Range: >=3.0.0,<=3.1.3
OpenSUSE/Leap2 versions
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
Canonical/Ubuntu Linux
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
Oracle Corporation/Agile Engineering Data Management
cpe:2.3:a:oracle:agile_engineering_data_management:6.2.1.0:*:*:*:*:*:*:*
Oracle Corporation/Agile Plm3 versions
cpe:2.3:a:oracle:agile_plm:9.3.3:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:oracle:agile_plm:9.3.3:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:agile_plm:9.3.5:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:agile_plm:9.3.6:*:*:*:*:*:*:*
Oracle Corporation/Communications Instant Messaging Server
cpe:2.3:a:oracle:communications_instant_messaging_server:10.0.1.5.0:*:*:*:*:*:*:*
Oracle Corporation/Fmw Platform2 versions
cpe:2.3:a:oracle:fmw_platform:12.2.1.3.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:oracle:fmw_platform:12.2.1.3.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:fmw_platform:12.2.1.4.0:*:*:*:*:*:*:*
Oracle Corporation/Instantis Enterprisetrack3 versions
cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:*
Oracle Corporation/Managed File Transfer2 versions
cpe:2.3:a:oracle:managed_file_transfer:12.2.1.3.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:oracle:managed_file_transfer:12.2.1.3.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:managed_file_transfer:12.2.1.4.0:*:*:*:*:*:*:*
Oracle Corporation/Mysql Enterprise Monitor
cpe:2.3:a:oracle:mysql_enterprise_monitor:*:*:*:*:*:*:*:*
Range: <=8.0.21
Oracle Corporation/Siebel UI Framework
cpe:2.3:a:oracle:siebel_ui_framework:*:*:*:*:*:*:*:*
Range: <=20.12
Oracle Corporation/Workload Manager3 versions
cpe:2.3:a:oracle:workload_manager:12.2.0.1:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:oracle:workload_manager:12.2.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:workload_manager:18c:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:workload_manager:19c:*:*:*:*:*:*:*

Patches

Vulnerability mechanics

References

www.oracle.com//security-alerts/cpujul2021.htmlnvdPatchThird Party AdvisoryWEB
www.oracle.com/security-alerts/cpuApr2021.htmlnvdPatchThird Party AdvisoryWEB
www.oracle.com/security-alerts/cpujan2021.htmlnvdPatchThird Party AdvisoryWEB
www.oracle.com/security-alerts/cpujan2022.htmlnvdPatchThird Party AdvisoryWEB
www.oracle.com/security-alerts/cpuoct2020.htmlnvdPatchThird Party AdvisoryWEB
lists.opensuse.org/opensuse-security-announce/2020-07/msg00084.htmlnvdMailing ListThird Party AdvisoryWEB
lists.opensuse.org/opensuse-security-announce/2020-07/msg00088.htmlnvdMailing ListThird Party AdvisoryWEB
github.com/advisories/GHSA-vf77-8h7g-gghpghsaADVISORY
lists.apache.org/thread.html/r61f411cf82488d6ec213063fc15feeeb88e31b0ca9c29652ee4f962e%40%3Cannounce.tomcat.apache.org%3EnvdMailing ListRelease NotesVendor AdvisoryWEB
lists.debian.org/debian-lts-announce/2020/07/msg00017.htmlnvdMailing ListThird Party AdvisoryWEB
nvd.nist.gov/vuln/detail/CVE-2020-13934ghsaADVISORY
security.netapp.com/advisory/ntap-20200724-0003/nvdThird Party Advisory
usn.ubuntu.com/4596-1/nvdThird Party Advisory
www.debian.org/security/2020/dsa-4727nvdThird Party AdvisoryWEB
lists.apache.org/thread.html/ra072b1f786e7d139e86f1d1145572e0ff71cef38a96d9c6f5362aac8@%3Cdev.tomcat.apache.org%3EghsaWEB
security.netapp.com/advisory/ntap-20200724-0003ghsaWEB
usn.ubuntu.com/4596-1ghsaWEB
lists.apache.org/thread.html/ra072b1f786e7d139e86f1d1145572e0ff71cef38a96d9c6f5362aac8%40%3Cdev.tomcat.apache.org%3Envd

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cvss	0.488
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