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Highest advisory severityMedium 2 vendors · 2 advisories

CVE-2026-40023

CVE-2026-40023: 2 tracked advisory records across Apache, NetApp. 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 severityMedium6.3

    Medium [CVE-2026-40023] Apache Log4cxx's XMLLayout https://logging.apache.org/log4cxx/1.7.0/classlog4cxx_1_1xml_1_1XMLLayout.html , in versions before…

    CVE-2026-40023Source published Source updated

    Apache Log4cxx's XMLLayout , in versions before 1.7.0, fails to sanitize characters forbidden by the XML 1.0 specification in log messages, NDC, and MDC property keys and values, producing invalid XML output. Conforming XML parsers must reject such documents with a fatal error, which may cause downstream log processing systems to drop or fail to index affected records. An attacker who can influence logged data can exploit this to suppress individual log records, impairing audit trails and detection of malicious activity. Users are advised to upgrade to Apache Log4cxx 1.7.0, which fixes this issue.

    Affected products in this advisory
    • Apache Log4cxx
    Source-reported affected versions
    • 1.7.0
    Source-reported fixed versions
    • 1.7.0
    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin

NetApp

1 advisory
  • Advisory severityMedium6.3

    Medium [CVE-2026-40023] Apache Log4cxx Vulnerability in NetApp Products

    NTAP-20260710-0003Source published Source updated

    Apache Log4cxx versions prior to 1.7.0 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 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
    • 1.7.0
    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

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