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Highest advisory severityHigh 2 vendors · 2 advisories

CVE-2026-66858

CVE-2026-66858: 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 severityHigh8.7

    High [CVE-2026-66858] The protocol skip routine in several Apache Thrift bindings did not apply the binding's recursion limit, so a message that nests unknown fields deeply enough can exhaust the stack

    CVE-2026-66858Source published Source updated

    The protocol skip routine in several Apache Thrift bindings did not apply the binding's recursion limit, so a message that nests unknown fields deeply enough can exhaust the stack. Affected: the Python C++ accelerator (the pure-Python protocols are not affected), the PHP library and its thrift_protocol extension, and the Perl, Lua, Smalltalk and OCaml libraries. This issue affects Apache Thrift: before 0.25.0. Users are recommended to upgrade to version 0.25.0, which fixes the issue.

    Affected products in this advisory
    • Apache Thrift
    Source-reported affected versions
    • Apache Thrift before 0.25.0
    Source-reported fixed versions
    • 0.25.0
    Mitigation guidance
    • The protocol skip routine in several Apache Thrift bindings did not apply the binding's recursion limit, so a message that nests unknown fields deeply enough can exhaust the stack.
    • Users are recommended to upgrade to version 0.25.0, which fixes the issue.
    Full advisory and evidenceOpen source bulletin

Red Hat

1 advisory
  • Advisory severityHigh7.5

    High [CVE-2026-66858] Denial of Service via deeply nested unknown fields

    CVE-2026-66858Source published Source updated

    Denial of Service via deeply nested unknown fields. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. Red Hat lists fixing advisory RHSA-2026:74369 with package thrift-main-0.25.0-0.1.hum1. Affected products named by the advisory: Red Hat Hardened Images; Red Hat Ceph Storage 7; Red Hat Ceph Storage 8; Red Hat Ceph Storage 9; and 1 more.

    Related products — impact not confirmed
    • Red Hat Hardened Images
    • Red Hat Ceph Storage 7
    • Red Hat Ceph Storage 8
    • Red Hat Ceph Storage 9

    1 more entries in the full advisory.

    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    • thrift-main-0.25.0-0.1.hum1
    • RHSA-2026:74369
    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin

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