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Critical RHSA-2026:74536 2 CVEs

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Published Oct 2, 2026 · Updated Oct 20, 2026

Ecosystem: Red Hat

Fixed packages 1

ReleasePackageFixed in
Red Hat · Hardened Images 1 hummingbird:1 oauth2-proxy 0:7.15.5-0.1.hum1

Vulnerabilities 2

  • Critical 9.1
    CVE-2026-76835

    OAuth2 Proxy 7.15.2 through 7.15.4 Authentication Bypass via X-Forwarded-Uri Under the Default Trusted Proxy Set

    OAuth2 Proxy honours a client-supplied X-Forwarded-Uri header when deciding whether a request may skip authentication, because the guard added for CVE-2026-40575 is inert in the default reverse-proxy configuration. GetRequestURI in pkg/requests/util/util.go p…

    oauth2-proxy oauth2-proxy
  • High 7.5
    CVE-2026-56851

    Panic parsing crafted input in x/text/secure/precis in golang.org/x/text

    The Nickname profile can panic with an out-of-bounds slice error when transforming crafted input into a short destination buffer.

    golang.org/x/text golang.org/x/text/secure/precis renovate trino Debian Ubuntu Azure Linux Wolfi Go

References

  • article
    https://images.redhat.com/
  • report
    https://access.redhat.com/security/cve/CVE-2026-76835
  • article
    https://access.redhat.com/security/updates/classification/
  • report
    https://access.redhat.com/security/cve/CVE-2026-56851
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_74536.json
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2547607
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-56851
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-56851
  • article
    https://go.dev/cl/793360
  • article
    https://go.dev/issue/80112
  • advisory
    https://pkg.go.dev/vuln/GO-2026-6629
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2522418
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-76835
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-76835
  • article
    https://github.com/oauth2-proxy/oauth2-proxy
  • article
    https://github.com/oauth2-proxy/oauth2-proxy/blob/v7.15.4/pkg/apis/middleware/scope.go
  • article
    https://github.com/oauth2-proxy/oauth2-proxy/issues/3506
  • article
    https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-7x63-xv5r-3p2x
  • article
    https://www.vulncheck.com/advisories/oauth2-proxy-through-authentication-bypass-via-x-forwarded-uri-under-the-default-trusted-proxy-set