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01 Record

CVE-2022-40303

An issue was discovered in libxml2 before 2.10.3. When parsing a multi-gigabyte XML document with the XML_PARSE_HUGE parser option enabled, several integer counters can overflow. This results in an

HighPUBLISHEDCNA: mitre
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
View raw JSON

02 Description

An issue was discovered in libxml2 before 2.10.3. When parsing a multi-gigabyte XML document with the XML_PARSE_HUGE parser option enabled, several integer counters can overflow. This results in an

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.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • 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
41.36% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 98.6% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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
2022-11-22 00:00Z3 YR AGO
Last updated
2026-10-14 17:52Z14 DAYS AGO
Reserved
2022-09-09
Assigning CNA
mitre
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-190Integer Overflow or WraparoundBase
Data version
5.2
Document digest
8ba3bc4659796c55702a124b312620e5671e969c6f9a6ae6f7fd6a4d9a7606a7

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—
netappnetapp_manageability_sdkNot specified—
netappontap_select_deploy_administration_utilityNot 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.