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Highest advisory severityCritical 2 vendors · 2 advisories

CVE-2026-40682

CVE-2026-40682: 2 tracked advisory records across Apache, 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 severityCritical9.1

    Critical [CVE-2026-40682] Apache OpenNLP: XXE via Dictionary Parsing in DictionaryEntryPersistor

    CVE-2026-40682Source published Source updated

    XML External Entity (XXE) via Unsanitized Dictionary Parsing in Apache OpenNLP DictionaryEntryPersistor Versions Affected: before 2.5.9, before 3.0.0-M3 The DictionaryEntryPersistor class initializes a static SAXParserFactory at class-load time without enabling FEATURE_SECURE_PROCESSING or disabling DTD processing. When create(InputStream, EntryInserter) is invoked, the only feature set on the XMLReader is namespace support — external entity resolution and DOCTYPE declarations remain fully enabled. An attacker who can supply a crafted dictionary file (e.g., a stop-word list or domain dictionary) containing a malicious DOCTYPE declaration can trigger local file disclosure via file:// entity references or server-side request forgery via http:// entity references during SAX parsing, before…

    Affected products in this advisory
    • Apache OpenNLP DictionaryEntryPersistor
    Source-reported affected versions
    • Apache OpenNLP 2.0 before 2.5.9
    • Apache OpenNLP 3.0.0-M1 before 3.0.0-M3
    • Apache OpenNLP before 1.9.5
    Source-reported fixed versions
    • 2.5.9
    • 3.0.0-M3
    • 1.9.5
    Mitigation guidance
    • Mitigation: 2.x users should upgrade to 2.5.9.
    • x users should upgrade to 3.0.0-M3.
    • Users who cannot upgrade immediately should ensure that all dictionary files are sourced from trusted origins and should consider wrapping the Dictionary(InputStream) constructor with input validation that rejects any XML containing a DOCTYPE declaration before it reaches the parser.
    Full advisory and evidenceOpen source bulletin

Red Hat

1 advisory
  • Advisory severityHigh7.5

    High [CVE-2026-40682] XML External Entity (XXE) vulnerability via crafted dictionary parsing

    CVE-2026-40682Source published

    XML External Entity (XXE) vulnerability via crafted dictionary parsing. Red Hat rates this important (CVSS 7.5). Weakness: CWE-611. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released.

    Affected products in this advisory
    • Red Hat OpenShift AI (RHOAI)
    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    No fixed-version detail extracted. This does not mean no fix exists.
    Mitigation guidance
    • Red Hat rates this important; a fix erratum may not be out yet — apply the RHSA as soon as it publishes.
    Full advisory and evidenceOpen source bulletin

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