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Highest advisory severityHigh 3 vendors · 4 advisories

CVE-2026-34479

CVE-2026-34479: 4 tracked advisory records across Apache, NetApp, Red Hat. Compare vendor sources and published fix guidance.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

NVD detail CVE.org

Vendor advisory comparison

Apache

1 advisory
  • Advisory severityMedium6.9

    Medium [CVE-2026-34479] The Log4j1XmlLayout from the Apache Log4j 1-to-Log4j 2 bridge fails to escape characters forbidden by the XML 1.0 standard…

    CVE-2026-34479Source published Source updated

    The Log4j1XmlLayout from the Apache Log4j 1-to-Log4j 2 bridge fails to escape characters forbidden by the XML 1.0 standard, producing malformed XML output. Conforming XML parsers are required to reject documents containing such characters with a fatal error, which may cause downstream log processing systems to drop or fail to index affected records. Two groups of users are affected: * Those using Log4j1XmlLayout directly in a Log4j Core 2 configuration file. * Those using the Log4j 1 configuration compatibility layer with org.apache.log4j.xml.XMLLayout specified as the layout class. Users are advised to upgrade to Apache Log4j 1-to-Log4j 2 bridge version 2.25.4, which corrects this issue. Note: The Apache Log4j 1-to-Log4j 2 bridge is deprecated and will not be present in Log4j 3. Users…

    Affected products in this advisory
    • Apache Log4j
    • Log4j
    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    • 2.25.4
    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin

NetApp

2 advisories
  • Advisory severityHigh7.5

    High [CVE-2026-34479] IBM Db2 Vulnerability in NetApp Products

    NTAP-20260717-0007Source published Source updated

    IBM Db2 Server versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.4 on all platforms are susceptible to a vulnerability which when successfully exploited could lead to addition or modification of data. Successful exploitation of this vulnerability could lead to addition or modification of data. NetApp states there is no workaround available at this time.

    Affected products in this advisory
    No product details extracted. Check the source bulletin.
    Source-reported affected versions
    • 11.5.0
    • 11.5.9
    • 12.1.0
    • 12.1.4
    Source-reported fixed versions
    No fixed-version detail extracted. This does not mean no fix exists.
    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin
  • Advisory severityHigh7.5

    High [CVE-2026-34479] Apache Log4j Vulnerability in NetApp Products

    NTAP-20260703-0011Source published Source updated

    Apache Log4j versions 2.7 prior to 2.25.4 and 3.0.0-alpha1 through 3.0.0-beta3 are susceptible to a vulnerability which when successfully exploited could lead to addition or modification of data. Successful exploitation of this vulnerability could lead to addition or modification of data. Affected products: Data Infrastructure Insights and Data Secure Storage Workload Security Agent. NetApp reports that one or more additional products remain under investigation; review the canonical advisory for current status. NetApp states there is no workaround available at this time.

    Affected products in this advisory
    • Data Infrastructure Insights and Data Secure Storage Workload Security Agent
    Source-reported affected versions
    • 2.25.4
    • 3.0.0
    Source-reported fixed versions
    No fixed-version detail extracted. This does not mean no fix exists.
    Mitigation guidance
    • Data Infrastructure Insights and Data Secure Storage Workload Security Agent: Fixed as of 20260727.
    Full advisory and evidenceOpen source bulletin

Red Hat

1 advisory
  • Advisory severityMedium5.3

    Medium [CVE-2026-34479] Apache Log4j 1-to-Log4j 2 bridge: Log processing denial of service due to improper XML escaping

    CVE-2026-34479Source published

    Apache Log4j 1-to-Log4j 2 bridge: Log processing denial of service due to improper XML escaping. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-91. Affected package(s): offline-knowledge-portal/rhokp-rhel9:1779996999. Resolved in Red Hat advisory RHSA-2026:21773 — update the affected packages (`sudo dnf update`).

    Related products — impact not confirmed
    • offline-knowledge-portal/rhokp-rhel9:1779996999
    • Red Hat Enterprise Linux
    Source-reported affected versions
    • offline-knowledge-portal/rhokp-rhel9:1779996999
    Source-reported fixed versions
    • RHSA-2026:21773
    Mitigation guidance
    • Update the affected package(s) to the fixed version shipped in RHSA-2026:21773 (`sudo dnf update` / `yum update`).
    Full advisory and evidenceOpen source bulletin

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