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Highest advisory severityHigh 1 vendor · 1 advisory

CVE-2026-9547

CVE-2026-9547: 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 severityHigh7.4

    High [CVE-2026-9547] Man-in-the-middle attack via SSH host key bypass

    CVE-2026-9547Source published Source updated

    When a libcurl-based application performs transfers via `SCP://` or `SFTP://` and utilizes the `CURLOPT_SSH_KEYFUNCTION` callback, it may silently accept an untrusted server. This vulnerability occurs when a server presents a host key type that does not match the specific key type already recorded for that host in the `known_hosts` file. Instead of rejecting the mismatch, the callback mechanism fails to properly enforce the restriction, allowing the connection to succeed without warning and risking a potential man-in-the-middle attack. A flaw was found in curl. The vulnerability requires specific application callback usage, not a general curl client default. Red Hat severity: Important — CVSS 7.4 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N). Weakness: CWE-347. Affected Red Hat…

    Affected products in this advisory
    • Red Hat Enterprise Linux 10
    • Red Hat Enterprise Linux 9
    • Red Hat OpenShift Container Platform 4.22
    • Cert Manager support for Red Hat OpenShift release 1.19

    5 more entries in the full advisory.

    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    • curl-0:8.12.1-4.el10_2.3
    • curl-0:7.76.1-40.el9_8.5
    • rhcos-4.22.9.8.202608251819-0
    • rhcos-4.22.9.8.202609081748-0

    30 more entries in the full advisory.

    Mitigation guidance
    • Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
    Full advisory and evidenceOpen source bulletin

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