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Highest advisory severityMedium 1 vendor · 1 advisory

CVE-2026-59884

CVE-2026-59884: 1 tracked advisory record across 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.

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Vendor advisory comparison

Red Hat

1 advisory
  • Advisory severityMedium5.9

    Medium [CVE-2026-59884] Denial of Service via crafted BER input

    CVE-2026-59884Source published Source updated

    pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the BER decoder shared by the CER and DER codecs parses long-form tags by accumulating continuation octets without an upper bound on the tag ID size, allowing a crafted input to force construction of an arbitrarily large integer with CPU cost growing quadratically and to trigger unhandled ValueError exceptions in Python 3.11+ error formatting paths. Any application decoding untrusted BER, CER, or DER input is affected. This issue is fixed in version 0.6.4. A remote attacker can exploit this by providing a specially crafted input, leading to the construction of an arbitrarily large integer. A flaw was found in pyasn1's BER decoder. Many common uses of pyasn1 involve parsing trusted certificates or local configuration and are…

    Affected products in this advisory
    • Red Hat AI Inference Server 3.3
    • Red Hat Enterprise Linux AI 3.3
    • Red Hat Hardened Images
    • Red Hat OpenShift AI 3.3

    30 more entries in the full advisory.

    Source-reported affected versions
    • < 0.6.4
    • < 3.11
    Source-reported fixed versions
    • 0.6.4
    • rhaiis/model-opt-cuda-rhel9:1787601159
    • rhelai3/disk-image-cuda-rhel9:1788290314
    • rhelai3/bootc-aws-cuda-rhel9:1788273908

    31 more entries in the full advisory.

    Mitigation guidance
    • Update to pyasn1 version 0.6.4 or later when available for your product stream. The impact is limited to availability (denial of service) — an attacker cannot access or modify data. Applications that do not process untrusted ASN.1/BER input are at reduced risk.
    Full advisory and evidenceOpen source bulletin

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