xmlSchemaPreRun in xmlschemas.c in libxml2 2.9.10 allows an xmlSchemaValidateStream memory leak.
Priority MEDIUM 45CWE-401Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 14 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-401.
Summary
xmlSchemaPreRun in xmlschemas.c in libxml2 2.9.10 allows an xmlSchemaValidateStream memory leak.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.03183 88th percentileScored 2026-11-07
Fix Partial Red Hat: 5 advisoriesRed Hat: 14 fixed, 1 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 36
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:xmlsoft:libxml2:2.9.10:*:*:*:*:*:*:* | 2.9.10 | Vulnerable | xmlsoft |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:plug-in_for_symantec_netbackup:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:smi-s_provider:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:snapdrive:-:*:*:*:*:windows:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
- cpe:2.3:a:xmlsoft:libxml2:2.9.10:*:*:*:*:*:*:* Versions 2.9.10 Vulnerable ·xmlsoft
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:plug-in_for_symantec_netbackup:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:smi-s_provider:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:snapdrive:-:*:*:*:*:windows:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
Show 26 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.10.0:*:*:*:*:*:*:* | 1.10.0 | Vulnerable | Oracle |
| cpe:2.3:a:oracle:enterprise_manager_base_platform:13.4.0.0:*:*:*:*:*:*:* | 13.4.0.0 | Vulnerable | Oracle |
| cpe:2.3:a:oracle:enterprise_manager_base_platform:13.5.0.0:*:*:*:*:*:*:* | 13.5.0.0 | Vulnerable | Oracle |
| cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:* | 12.4.0.0 | Vulnerable | Oracle |
| cpe:2.3:a:oracle:mysql_workbench:*:*:*:*:*:*:*:* | up to 8.0.26 | Vulnerable | Oracle |
| cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:*:*:*:*:*:*:* | 8.58 | Vulnerable | Oracle |
| cpe:2.3:a:oracle:real_user_experience_insight:13.3.1.0:*:*:*:*:*:*:* | 13.3.1.0 | Vulnerable | Oracle |
| cpe:2.3:a:oracle:real_user_experience_insight:13.4.1.0:*:*:*:*:*:*:* | 13.4.1.0 | Vulnerable | Oracle |
| cpe:2.3:a:oracle:real_user_experience_insight:13.5.1.0:*:*:*:*:*:*:* | 13.5.1.0 | Vulnerable | Oracle |
| cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* | 15.1 | Vulnerable | openSUSE |
| cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* | 30 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* | 31 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* | 32 | Vulnerable | Fedoraproject |
- cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.10.0:*:*:*:*:*:*:* Versions 1.10.0 Vulnerable ·Oracle
- cpe:2.3:a:oracle:enterprise_manager_base_platform:13.4.0.0:*:*:*:*:*:*:* Versions 13.4.0.0 Vulnerable ·Oracle
- cpe:2.3:a:oracle:enterprise_manager_base_platform:13.5.0.0:*:*:*:*:*:*:* Versions 13.5.0.0 Vulnerable ·Oracle
- cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:* Versions 12.4.0.0 Vulnerable ·Oracle
- cpe:2.3:a:oracle:mysql_workbench:*:*:*:*:*:*:*:* Versions up to 8.0.26 Vulnerable ·Oracle
- cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:*:*:*:*:*:*:* Versions 8.58 Vulnerable ·Oracle
- cpe:2.3:a:oracle:real_user_experience_insight:13.3.1.0:*:*:*:*:*:*:* Versions 13.3.1.0 Vulnerable ·Oracle
- cpe:2.3:a:oracle:real_user_experience_insight:13.4.1.0:*:*:*:*:*:*:* Versions 13.4.1.0 Vulnerable ·Oracle
- cpe:2.3:a:oracle:real_user_experience_insight:13.5.1.0:*:*:*:*:*:*:* Versions 13.5.1.0 Vulnerable ·Oracle
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·openSUSE
- cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* Versions 30 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* Versions 31 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* Versions 32 Vulnerable ·Fedoraproject
Remediation
Red Hat 5 advisories
- RHSA-2021:0949 Released 2021-03-22 · Red Hat rating LowRed Hat OpenShift Do openshift/odo-init-image 1.1.3 security update
- OpenShift Do 1 openshiftdo/odo-init-image-rhel7
- RHSA-2020:4479 Released 2020-11-04 · Red Hat rating Moderatelibxml2 security update
- Red Hat Enterprise Linux AppStream (v. 8) libxml2-devel-2.9.7-8.el8
- Red Hat Enterprise Linux BaseOS (v. 8) libxml2-2.9.7-8.el8, python3-libxml2-2.9.7-8.el8
- RHSA-2020:3996 Released 2020-09-29 · Red Hat rating Moderatelibxml2 security and bug fix update
- Red Hat Enterprise Linux Client (v. 7) libxml2-2.9.1-6.el7.5, libxml2-python-2.9.1-6.el7.5
- Red Hat Enterprise Linux Client Optional (v. 7) libxml2-devel-2.9.1-6.el7.5, libxml2-static-2.9.1-6.el7.5
- Red Hat Enterprise Linux ComputeNode (v. 7) libxml2-2.9.1-6.el7.5, libxml2-python-2.9.1-6.el7.5
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) libxml2-devel-2.9.1-6.el7.5, libxml2-static-2.9.1-6.el7.5
- Red Hat Enterprise Linux Server (v. 7) libxml2-2.9.1-6.el7.5, libxml2-2.9.1-6.el7.5.ppc, libxml2-devel-2.9.1-6.el7.5 +2
- Red Hat Enterprise Linux Server Optional (v. 7) libxml2-static-2.9.1-6.el7.5, libxml2-static-2.9.1-6.el7.5.ppc
- Red Hat Enterprise Linux Workstation (v. 7) libxml2-2.9.1-6.el7.5, libxml2-devel-2.9.1-6.el7.5, libxml2-python-2.9.1-6.el7.5
- Red Hat Enterprise Linux Workstation Optional (v. 7) libxml2-static-2.9.1-6.el7.5
Show 2 more Red Hat advisories
- RHSA-2020:2646 Released 2020-06-22 · Red Hat rating ImportantRed Hat JBoss Core Services Apache HTTP Server 2.4.37 SP3 security update
- Red Hat JBoss Core Services
- RHSA-2020:2644 Released 2020-06-22 · Red Hat rating ImportantRed Hat JBoss Core Services Apache HTTP Server 2.4.37 SP3 security update
- Red Hat JBoss Core Services on RHEL 6 Server jbcs-httpd24-curl-7.64.1-36.jbcs.el6, jbcs-httpd24-httpd-2.4.37-57.jbcs.el6, jbcs-httpd24-httpd-devel-2.4.37-57.jbcs.el6 +18
- Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-curl-7.64.1-36.jbcs.el7, jbcs-httpd24-httpd-2.4.37-57.jbcs.el7, jbcs-httpd24-httpd-devel-2.4.37-57.jbcs.el7 +19
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat 3scale API Management Platform 2 | Affected | No fix yet |
| OpenShift Do 1 | Fixed | RHSA-2021:0949 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2020:4479 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2020:4479 |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2020:3996 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2020:3996 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2020:3996 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2020:3996 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2020:3996 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2020:3996 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2020:3996 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2020:3996 |
| Red Hat JBoss Core Services | Fixed | RHSA-2020:2646 |
| Red Hat JBoss Core Services on RHEL 6 Server | Fixed | RHSA-2020:2644 |
| Red Hat JBoss Core Services on RHEL 7 Server | Fixed | RHSA-2020:2644 |
Not affected: 2 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2019-20388
- 2026-10-03 Alias added: GHSA-7g45-9xmp-g2w6
References
Patch 4
Advisory 7
Sources
- CVE-2019-20388 · CVE Program
- CVE-2019-20388 · NVD
- FIRST EPSS
- GHSA-7g45-9xmp-g2w6 · GitHub Advisory Database · CC BY 4.0
- CVE-2019-20388 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences