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Highest advisory severityMedium 2 vendors · 2 advisories

CVE-2026-28755

CVE-2026-28755: 2 tracked advisory records across F5, 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

F5

1 advisory
  • Advisory severityMedium5.3

    Medium [CVE-2026-28755] NGINX Plus and NGINX Open Source have a vulnerability in the ngx_stream_ssl_module module

    CVE-2026-28755Source published Source updated

    NGINX Plus and NGINX Open Source have a vulnerability in the ngx_stream_ssl_module module due to the improper handling of revoked certificates when configured with the ssl_verify_client on and ssl_ocsp on directives, allowing the TLS handshake to succeed even after an OCSP check identifies the certificate as revoked. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

    Related products — impact not confirmed
    • NGINX Plus
    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

Red Hat

1 advisory
  • Advisory severityMedium5.4

    Medium [CVE-2026-28755] Certificate revocation bypass when OCSP is enabled

    CVE-2026-28755Source published

    Certificate revocation bypass when OCSP is enabled. Red Hat rates this moderate (CVSS 5.4). Weakness: CWE-295. Affected package(s): nginx-main. Resolved in Red Hat advisory RHSA-2026:8346 — update the affected packages (`sudo dnf update`).

    Related products — impact not confirmed
    • nginx-main
    • Red Hat Enterprise Linux
    Source-reported affected versions
    • nginx-main-1.30.0-1.hum1
    Source-reported fixed versions
    • RHSA-2026:8346
    Mitigation guidance
    • Update the affected package(s) to the fixed version shipped in RHSA-2026:8346 (`sudo dnf update` / `yum update`).
    Full advisory and evidenceOpen source bulletin

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