synced 11 MIN AGO
01 Record

CVE-2022-40304

An issue was discovered in libxml2 before 2.10.3. Certain invalid XML entity definitions can corrupt a hash table key, potentially leading to subsequent logic errors. In one case, a double-free can be

HighPUBLISHEDCNA: mitre
CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
View raw JSON

02 Description

An issue was discovered in libxml2 before 2.10.3. Certain invalid XML entity definitions can corrupt a hash table key, potentially leading to subsequent logic errors. In one case, a double-free can be

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
5.81% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 92.8% of scored records. A rank, not a probability.
NVD base score
7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-10-14.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2022-11-23 00:00Z3 YR AGO
Last updated
2026-10-14 18:01Z14 DAYS AGO
Reserved
2022-09-09
Assigning CNA
mitre
Record state
PUBLISHED
Severity
High (CVSS 7.8)
CNA CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
Data version
5.2
Document digest
767e6fdfd733345d671194a77c988827e4eefc70a51fd355be1bdbde7eee632b

05 Affected products

VendorProductVersionsPlatforms
appleipadosNot specified—
appleiphone_osNot specified—
applemacosNot specified—
appletvosNot specified—
applewatchosNot specified—
netappactive_iq_unified_managerNot specified—
netappclustered_data_ontapNot specified—
netappclustered_data_ontap_antivirus_connectorNot specified—
netapph300sNot specified—
netapph300s_firmwareNot specified—
netapph410cNot specified—
netapph410c_firmwareNot specified—
netapph410sNot specified—
netapph410s_firmwareNot specified—
netapph500sNot specified—
netapph500s_firmwareNot specified—
netapph700sNot specified—
netapph700s_firmwareNot specified—
netappmanageability_software_development_kitNot specified—
netappsmi-s_providerNot specified—
netappsnapmanagerNot specified—
redhatenterprise_linuxNot specified—
redhatjboss_core_servicesNot specified—
redhatrhel_eusNot specified—
xmlsoftlibxml2Not specified—

06 References

07 Fixed in

AlmaLinux 8

  • libxml2
    Fixed in 2.9.7-15.el8_7.1
  • libxml2-devel
    Fixed in 2.9.7-15.el8_7.1
  • python3-libxml2
    Fixed in 2.9.7-15.el8_7.1

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 9

  • libxml2
    Fixed in 2.9.13-3.el9_1
  • libxml2-devel
    Fixed in 2.9.13-3.el9_1
  • python3-libxml2
    Fixed in 2.9.13-3.el9_1

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 8

  • libxml2
    Fixed in 2.9.7-15.el8_7.1
  • libxml2-devel
    Fixed in 2.9.7-15.el8_7.1
  • python3-libxml2
    Fixed in 2.9.7-15.el8_7.1

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • libxml2
    Fixed in 2.9.13-3.el9_1
  • libxml2-devel
    Fixed in 2.9.13-3.el9_1
  • python3-libxml2
    Fixed in 2.9.13-3.el9_1

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • libxml2
    Fixed in 2.9.14+dfsg-1.1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • libxml2
    Fixed in 2.9.14+dfsg-1.1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • libxml2
    Fixed in 2.9.14+dfsg-1.1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • libxml2
    Fixed in 2.9.4+dfsg1-6.1ubuntu1.8

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • libxml2
    Fixed in 2.9.10+dfsg-5ubuntu0.20.04.5

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • libxml2
    Fixed in 2.9.13+dfsg-1ubuntu0.2

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • libxml2
    Fixed in 2.9.1+dfsg1-3ubuntu4.13+esm4
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • libxml2
    Fixed in 2.9.3+dfsg1-1ubuntu0.7+esm4
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.