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Highest advisory severityMedium 1 vendor · 1 advisory

CVE-2026-53586

CVE-2026-53586: 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 severityMedium6.5

    Medium [CVE-2026-53586] Information disclosure via HTTP redirect allows credential leakage

    CVE-2026-53586Source published Source updated

    libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Prior to 1.8.6 and 1.9.5, the built-in HTTP transport in src/libgit2/transports/http.c follows an offsite initial redirect, and handle_remote_auth and handle_auth pass transport->owner->url instead of transport->server.url to the credential callback when the redirected host returns 401 Unauthorized. A callback that scopes credentials to the original trusted URL can therefore return GIT_CREDENTIAL_USERPASS_PLAINTEXT credentials that libgit2 stores in transport->server.cred and sends as an Authorization header to the redirected host. An attacker who controls a trusted Git host or an open redirect on that host can disclose…

    Affected products in this advisory
    • Red Hat Hardened Images
    • Red Hat Enterprise Linux 10
    • Red Hat Enterprise Linux 8
    • Red Hat Enterprise Linux 9

    3 more entries in the full advisory.

    Source-reported affected versions
    • < 1.8.6
    • < 1.9.5
    Source-reported fixed versions
    • 1.8.6
    • 1.9.5
    • libgit2-main-1.9.7-1.hum1
    • RHSA-2026:59361
    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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