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Fencer Vulns
high 7.5

CVE-2022-23308 json

valid.c in libxml2 before 2.9.13 has a use-after-free of ID and IDREF attributes.

published 2022-02-26 4 y ago modified 2026-10-14 25 d ago also EUVD-2022-28391 , JLSEC-2025-74

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
5.1%
EPSS 5.1% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

valid.c in libxml2 before 2.9.13 has a use-after-free of ID and IDREF attributes.

Patch / fix

  • julia XML2_jll 2.9.14+0
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.5
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • libxml2 Debian 14, Debian 13, Debian 12 2.9.13+dfsg-1

debian advisories DEBIAN-CVE-2022-23308

  • libxml2 Ubuntu 18.04 LTS 2.9.4+dfsg1-6.1ubuntu1.5
  • libxml2 Ubuntu 20.04 LTS 2.9.10+dfsg-5ubuntu0.20.04.2
  • libxml2 Ubuntu Pro 14.04 LTS 2.9.1+dfsg1-3ubuntu4.13+esm3
  • libxml2 Ubuntu Pro 16.04 LTS 2.9.3+dfsg1-1ubuntu0.7+esm2

ubuntu advisories UBUNTU-CVE-2022-23308

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • jbcs-httpd24-curl jboss core services 1 7.78.0-3.jbcs.el7
  • jbcs-httpd24-curl jboss core services 1 7.78.0-3.el8jbcs
  • jbcs-httpd24-httpd jboss core services 1 2.4.37-80.jbcs.el7
  • jbcs-httpd24-httpd jboss core services 1 2.4.37-80.el8jbcs
  • jbcs-httpd24-mod_jk jboss core services 1 1.2.48-29.redhat_1.jbcs.el7
  • jbcs-httpd24-mod_jk jboss core services 1 1.2.48-29.redhat_1.el8jbcs
  • jbcs-httpd24-mod_md jboss core services 1 1:2.0.8-41.jbcs.el7
  • jbcs-httpd24-mod_md jboss core services 1 1:2.0.8-41.el8jbcs

red hat advisories RHSA-2022:1389RHSA-2022:0899

  • libxml2 SLE Module for Basesystem 15 SP4, openSUSE Leap 15.4 2.9.14-150400.5.7.1
  • libxml2-python SLE Module for Basesystem 15 SP4, openSUSE Leap 15.4 2.9.14-150400.5.7.1
  • libxml2 SLES for SAP 15 SP2, SLES for SAP 15 SP1, SLES for SAP 15 +20 more 2.9.7-150000.3.46.1
  • python-libxml2-python SLES for SAP 15 SP2, SLES for SAP 15 SP1, SLES for SAP 15 +21 more 2.9.7-150000.3.46.1
  • libxml2 SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +11 more 2.9.4-46.49.1
  • python-libxml2 SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +10 more 2.9.4-46.49.1
  • python-libxml2-python SLES 15 SP2-BCL, SLES 15 SP1-BCL, SLE Real Time 15 SP2 +20 more 2.9.7-3.40.1
  • libxml2 SLES 11 SP4-LTSS, SLE Point of Sale 11 SP3 2.7.6-0.77.43.1

suse advisories SUSE-SU-2022:2552-1SUSE-SU-2022:1750-1SUSE-SU-2022:1308-1SUSE-SU-2022:0802-2SUSE-SU-2022:0802-1SUSE-SU-2022:14904-1

  • rubygem-nokogiri openSUSE Tumbleweed 1.18.9-1.4
  • rubygem-nokogiri openSUSE Tumbleweed 1.18.2-1.1
  • rubygem-nokogiri openSUSE Tumbleweed 1.15.5-1.5
  • rubygem-nokogiri openSUSE Tumbleweed 1.13.3-1.1
  • libxml2 openSUSE Tumbleweed 2.9.13-1.1
  • ruby3.2-rubygem-nokogiri openSUSE Tumbleweed 1.13.9-1.7
  • python-libxml2-python openSUSE Leap 15.3 2.9.7-3.40.1

opensuse advisories openSUSE-SU-2026:10356-1openSUSE-SU-2025:14697-1openSUSE-SU-2024:14174-1openSUSE-SU-2024:11912-1openSUSE-SU-2024:11950-1openSUSE-SU-2024:13165-1

  • libxml2 Rocky Linux 8 2.9.7-12.el8_5

rocky linux advisories RLSA-2022:0899

  • libxml2 Alpine 3.24, Alpine 3.23, Alpine 3.22 +10 more 2.9.13-r0
  • qt5-qtwebengine Alpine 3.17 5.15.11-r12
  • qt5-qtwebengine Alpine 3.23, Alpine 3.22, Alpine 3.21 +3 more 5.15.11-r13

alpine advisories ALPINE-CVE-2022-23308

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libxml2 CBL-Mariner 2.0 2.9.13-1

azure linux advisories AZL-8862

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

  • libxml2 Arch Linux 2.9.14-1

arch linux advisories AVG-2726

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-23308 updated cvss 8.1

libxml2: Use-after-free of ID and IDREF attributes

  • Red Hat Enterprise Linux 6 libxml2, libxml2-python Red Hat Enterprise Linux 7 libxml2, libxml2-python
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 8) libxml2-devel 2.9.7-12.el8_5, libxml2-debuginfo 2.9.7-12.el8_5, libxml2-debugsource 2.9.7-12.el8_5, python3-libxml2-debuginfo 2.9.7-12.el8_5 Red Hat Enterprise Linux BaseOS (v. 8) libxml2 2.9.7-12.el8_5, python3-libxml2 2.9.7-12.el8_5
    fixed: vendor fix RHSA-2022:0899
  • Red Hat JBoss Core Services
    fixed: vendor fix RHSA-2022:1390
  • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-curl 7.78.0-3.jbcs.el7, jbcs-httpd24-httpd 2.4.37-80.jbcs.el7, jbcs-httpd24-mod_md 2.0.8-41.jbcs.el7, jbcs-httpd24-libcurl 7.78.0-3.jbcs.el7, jbcs-httpd24-apr-util 1.6.1-91.jbcs.el7, jbcs-httpd24-mod_ssl 2.4.37-80.jbcs.el7, +25 more Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-curl 7.78.0-3.el8jbcs, jbcs-httpd24-httpd 2.4.37-80.el8jbcs, jbcs-httpd24-mod_md 2.0.8-41.el8jbcs, jbcs-httpd24-libcurl 7.78.0-3.el8jbcs, jbcs-httpd24-apr-util 1.6.1-91.el8jbcs, jbcs-httpd24-mod_ssl 2.4.37-80.el8jbcs, +25 more
    fixed: vendor fix RHSA-2022:1389
  • Red Hat Enterprise Linux 9 libxml2, python3-libxml2
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-23-348-10 updated cvss 7.5

Siemens SIMATIC S7-1500

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= 3.1.0, < 3.1.5
    affected: fixed in V3.1.5, mitigation support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-23-166-12 updated cvss 7.5

Siemens SINAMICS Medium Voltage Products

  • Siemens SINAMICS PERFECT HARMONY GH180 6SR5
    affected: vendor fix, mitigation

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-23-075-01 updated cvss 7.5

Siemens SCALANCE, RUGGEDCOM Third-Party

  • Siemens RUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2) <V7.2 Siemens RUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2) <V7.2 Siemens SCALANCE M804PB (6GK5804-0AP00-2AA2) <V7.2 Siemens SCALANCE M812-1 ADSL-Router (Annex A) (6GK5812-1AA00-2AA2) <V7.2 Siemens SCALANCE M812-1 ADSL-Router (Annex B) (6GK5812-1BA00-2AA2) <V7.2 Siemens SCALANCE M816-1 ADSL-Router (Annex A) (6GK5816-1AA00-2AA2) <V7.2
    +14 more products
    Siemens SCALANCE M816-1 ADSL-Router (Annex B) (6GK5816-1BA00-2AA2) <V7.2 Siemens SCALANCE M826-2 SHDSL-Router (6GK5826-2AB00-2AB2) <V7.2 Siemens SCALANCE M874-2 (6GK5874-2AA00-2AA2) <V7.2 Siemens SCALANCE M874-3 (6GK5874-3AA00-2AA2) <V7.2 Siemens SCALANCE M876-3 (EVDO) (6GK5876-3AA02-2BA2) <V7.2 Siemens SCALANCE M876-3 (ROK) (6GK5876-3AA02-2EA2) <V7.2 Siemens SCALANCE M876-4 (6GK5876-4AA10-2BA2) <V7.2 Siemens SCALANCE M876-4 (EU) (6GK5876-4AA00-2BA2) <V7.2 Siemens SCALANCE M876-4 (NAM) (6GK5876-4AA00-2DA2) <V7.2 Siemens SCALANCE MUM853-1 (EU) (6GK5853-2EA00-2DA1) <V7.2 Siemens SCALANCE MUM856-1 (EU) (6GK5856-2EA00-3DA1) <V7.2 Siemens SCALANCE MUM856-1 (RoW) (6GK5856-2EA00-3AA1) <V7.2 Siemens SCALANCE S615 (6GK5615-0AA00-2AA2) <V7.2 Siemens SCALANCE S615 EEC (6GK5615-0AA01-2AA2) <V7.2
    affected: fixed in V7.2 support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

5.12% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
julia XML2_jll
<2.9.14+0
2.9.14+0

Affected products

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
  • Siemens SINAMICS PERFECT HARMONY GH180
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.