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Highest advisory severityHigh 3 vendors · 4 advisories

CVE-2026-34480

CVE-2026-34480: 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-2026-34480] Apache Log4j Core's XmlLayout https://logging.apache.org/log4j/2.x/manual/layouts.html#XmlLayout , in versions up to and…

    CVE-2026-34480Source published Source updated

    Apache Log4j Core's XmlLayout , in versions up to and including 2.25.3, fails to sanitize characters forbidden by the XML 1.0 specification producing invalid XML output whenever a log message or MDC value contains such characters. The impact depends on the StAX implementation in use: * JRE built-in StAX: Forbidden characters are silently written to the output, producing malformed XML. Conforming parsers must reject such documents with a fatal error, which may cause downstream log-processing systems to drop the affected records. * Alternative StAX implementations (e.g., Woodstox , a transitive dependency of the Jackson XML Dataformat module): An exception is thrown during the logging call, and the log event is never delivered to its intended appender, only to Log4j's internal status…

    Affected products in this advisory
    • Apache Log4j
    • Apache Log4j Core
    • Log4j
    Source-reported affected versions
    • 2.25.3
    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-2026-34477 +2] June 2026 IBM Db2 Apache Log4j Vulnerabilities in NetApp Products

    NTAP-20260626-0009Source published Source updated

    This bulletin covers 3 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.

    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 vulnerabilities in log4j v2.25.3. Successful exploitation of these vulnerabilities could lead to disclosure of sensitive information or 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

    1 more entries in the full advisory.

    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 severityMedium6.9

    Medium [CVE-2026-34480] Apache Log4j Vulnerability in NetApp Products

    NTAP-20260513-0007Source published Source updated

    Multiple NetApp products incorporate Apache Log4j. Apache Log4j versions 2.0-alpha1 through 2.25.3 and 3.0.0-alpha1 through 3.0.0-beta3 are susceptible to a vulnerability which when successfully exploited could lead to disclosure of sensitive information. Successful exploitation of this vulnerability could lead to disclosure of sensitive information. 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
    No product details extracted. Check the source bulletin.
    Source-reported affected versions
    • 2.25.3
    • 3.0.0
    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

Red Hat

1 advisory
  • Advisory severityMedium5.3

    Medium [CVE-2026-34480] Invalid XML output causes denial of service in logging

    CVE-2026-34480Source published

    Invalid XML output causes denial of service in logging. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-168. Affected package(s): log4j-core-test, offline-knowledge-portal/rhokp-rhel9:1779996999, log4j-core. Resolved in Red Hat advisory RHSA-2026:22619 — update the affected packages (`sudo dnf update`).

    Related products — impact not confirmed
    • log4j-core-test
    • offline-knowledge-portal/rhokp-rhel9:1779996999
    • Red Hat Enterprise Linux
    Source-reported affected versions
    • log4j-core-test
    • offline-knowledge-portal/rhokp-rhel9:1779996999
    • log4j-core
    Source-reported fixed versions
    • RHSA-2026:22619
    Mitigation guidance
    • Update the affected package(s) to the fixed version shipped in RHSA-2026:22619 (`sudo dnf update` / `yum update`).
    Full advisory and evidenceOpen source bulletin

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