CVE-2026-74860 (GCVE-0-2026-74860)
Vulnerability from cvelistv5
Published
2026-09-08 11:27
Modified
2026-10-26 16:16
Severity ?
8.5 (High) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE
  • CWE-763 - Release of Invalid Pointer or Reference
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.
References
https://access.redhat.com/errata/RHSA-2026:64463 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:71585 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:71586 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:71641 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:72470 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:72475 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:72476 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:79357 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:82939 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:89750 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:89759 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:90309 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-74860 vdb-entry, x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2529697 issue-tracking, x_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:2.12.5-10.el10_2.4   < *
    cpe:/o:redhat:enterprise_linux:10.2
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   Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support Unaffected: 0:2.12.5-9.el10_0.9   < *
    cpe:/o:redhat:enterprise_linux_eus:10.0
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   Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:2.9.7-21.el8_10.9   < *
    cpe:/a:redhat:enterprise_linux:8::appstream
    cpe:/o:redhat:enterprise_linux:8::baseos
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   Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:2.9.7-21.el8_10.9   < *
    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   < *
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/o:redhat:enterprise_linux:9::baseos
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   Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:2.9.13-14.el9_8.5   < *
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/o:redhat:enterprise_linux:9::baseos
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   Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:2.9.13-13.el9_4.10   < *
    cpe:/a:redhat:rhel_e4s:9.4::appstream
    cpe:/o:redhat:rhel_e4s:9.4::baseos
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   Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:2.9.13-13.el9_6   < *
    cpe:/a:redhat:rhel_eus:9.6::appstream
    cpe:/o:redhat:rhel_eus:9.6::baseos
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   Red Hat Cert Manager support for Red Hat OpenShift release 1.20 Unaffected: 1790589912   < *
    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   < *
    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   < *
    cpe:/a:redhat:cert_manager:1.20::el9
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   Red Hat Red Hat Cost Management On-Premise 1 Unaffected: 1791460851   < *
    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   < *
    cpe:/a:redhat:hummingbird:1
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   Red Hat Red Hat Update Infrastructure 5 Unaffected: 1791978534   < *
    cpe:/a:redhat:rhui:5::el9
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   Red Hat Red Hat Update Infrastructure 5 Unaffected: 1791978528   < *
    cpe:/a:redhat:rhui:5::el9
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   Red Hat Red Hat Update Infrastructure 5 Unaffected: 1791978528   < *
    cpe:/a:redhat:rhui:5::el9
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   Red Hat Red Hat Update Infrastructure 5 Unaffected: 1791964013   < *
    cpe:/a:redhat:rhui:5::el9
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   Red Hat Red Hat Update Infrastructure 5 Unaffected: 1791978693   < *
    cpe:/a:redhat:rhui:5::el9
 Create a notification for this product.
   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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   Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
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   Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
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