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Highest advisory severityHigh 2 vendors · 2 advisories

CVE-2026-47321

CVE-2026-47321: 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 severityHigh7.5

    High [CVE-2026-47321] Apache MINA: The CompressionFilter class uses ZLib to deflate and inflate data sent and received

    CVE-2026-47321Source published Source updated

    The CompressionFilter class uses ZLib to deflate and inflate data sent and received. When we inflate incoming data, the filter does not control the resulting size, and create a buffer no matter what. Some compressed data may have a compression ration greater than 1 thousand, leading to an exhaustion of the application memory, as we don't control the deflated size. The fix adds such a control by allowing the application developer to provide a fixed size limit, which when reached throws an exception. It also allows the user to provide a compression ratio that should not be exceeded, protected the application from small inflated files that inflate in gigantic files, but with a grace limit for the resulting size (1Mb) to avoid false positive (like a very small file inflating with a high…

    Related products — impact not confirmed
    • Apache MINA
    Source-reported affected versions
    • Apache MINA 2.2.0 before 2.2.8
    • Apache MINA 2.1.0 before 2.1.13
    • Apache MINA 2.0.0 before 2.0.29
    Source-reported fixed versions
    • 2.2.8
    • 2.1.13
    • 2.0.29
    Mitigation guidance
    • The fix adds such a control by allowing the application developer to provide a fixed size limit, which when reached throws an exception.
    • Applications using Apache MINA are advised to upgrade and configure their CompressionFilter instance.
    Full advisory and evidenceOpen source bulletin

Red Hat

1 advisory
  • Advisory severityHigh7.5

    High [CVE-2026-47321] Denial of Service via unbounded decompression amplification

    CVE-2026-47321Source published Source updated

    Denial of Service via unbounded decompression amplification. Red Hat rates this important (CVSS 7.5). Weakness: CWE-409. Affected products named by the advisory: OpenShift Developer Tools and Services; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; and 2 more.

    Related products — impact not confirmed
    • OpenShift Developer Tools and Services
    • Red Hat Enterprise Linux 10
    • Red Hat Enterprise Linux 8
    • Red Hat Enterprise Linux 9

    2 more entries in the full advisory.

    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
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin

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