CVE-2026-74860 (GCVE-0-2026-74860)

Vulnerability from cvelistv5 – Published: 2026-09-08 11:27 – Updated: 2026-10-14 19:02
VLAI
Title
Libxml2: double-free/uaf in libxml2 python bindings
Summary
A flaw was found in libxml2 with Python bindings enabled. A remote attacker could exploit this vulnerability by providing a specially crafted XML document containing a Document Type Definition (DTD) with enumerated attribute values. This triggers a double-free error in the SAX attributeDecl callback handler, where a string is freed twice. This flaw can lead to a denial of service (DoS) due to a reproducible crash in Python applications using the libxml2 SAX bindings.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 12:08 UTC
CWE
  • CWE-763 - Release of Invalid Pointer or Reference
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1046 records in the last 180 days details
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:64463 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:71585 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:71586 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:71641 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:72470 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:72475 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:72476 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:79357 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:82939 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-74860 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2529697 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version CPE status
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:2.12.5-10.el10_2.4 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.2
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:2.9.7-21.el8_10.9 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
    cpe:/o:redhat:enterprise_linux:8::baseos
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Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:2.9.13-14.el9_8.5 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/o:redhat:enterprise_linux:9::baseos
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Red Hat Cert Manager support for Red Hat OpenShift release 1.20 Unaffected: 1790589912 , < * (rpm)
    cpe:/a:redhat:cert_manager:1.20::el9
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Red Hat Cert Manager support for Red Hat OpenShift release 1.20 Unaffected: 1790589914 , < * (rpm)
    cpe:/a:redhat:cert_manager:1.20::el9
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Red Hat Cert Manager support for Red Hat OpenShift release 1.20 Unaffected: 1790589855 , < * (rpm)
    cpe:/a:redhat:cert_manager:1.20::el9
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Red Hat Red Hat Cost Management On-Premise 1 Unaffected: 1791460851 , < * (rpm)
    cpe:/a:redhat:cost_management_on_premise:1::el10
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Red Hat Red Hat Hardened Images Unaffected: 2.15.4-0.1.hum1 , < * (rpm)
    cpe:/a:redhat:hummingbird:1
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Red Hat Red Hat Update Infrastructure 5 Unaffected: 1791978534 , < * (rpm)
    cpe:/a:redhat:rhui:5::el9
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Red Hat Red Hat Update Infrastructure 5 Unaffected: 1791978528 , < * (rpm)
    cpe:/a:redhat:rhui:5::el9
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Red Hat Red Hat Update Infrastructure 5 Unaffected: 1791964013 , < * (rpm)
    cpe:/a:redhat:rhui:5::el9
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Red Hat Red Hat Update Infrastructure 5 Unaffected: 1791978693 , < * (rpm)
    cpe:/a:redhat:rhui:5::el9
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Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
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Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
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Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
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Red Hat Red Hat Hardened Images     cpe:/a:redhat:hummingbird:1
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Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
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Date Public
2026-03-08 09:20
Show details on NVD website

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}



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