VDB
RHSA-2026%3A1166
RHSA-2026%3A1166
PUBLISHED
CVSS 7.5 HIGH
A flaw was found in golang. A remote attacker could exploit this vulnerability by providing a specially crafted certificate during the error string construction process within the `HostnameError.Error()` function. This flaw, caused by unbounded string concatenation, leads to excessive resource consumption. Successful exploitation can result in a denial of service (DoS) for the affected system.
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:f5df0f7414cc58ec0a00f4e26d646cfee475b9b6a7853215782eae552513e997_s390x as a component of cert-manager operator for Red Hat OpenShift 1.18 | *, registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:f5df0f7414cc58ec0a00f4e26d646cfee475b9b6a7853215782eae552513e997_s390x, registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:f5df0f7414cc58ec0a00f4e26d646cfee475b9b6a7853215782eae552513e997_s390x |
| Go | golang | |
| Red Hat | registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:41df7aabbce42599bad7fdc721cd12aa6e12d17e1c0658fb3294a1f68483d656_amd64 as a component of cert-manager operator for Red Hat OpenShift 1.18 | registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:41df7aabbce42599bad7fdc721cd12aa6e12d17e1c0658fb3294a1f68483d656_amd64, registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:41df7aabbce42599bad7fdc721cd12aa6e12d17e1c0658fb3294a1f68483d656_amd64, registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:41df7aabbce42599bad7fdc721cd12aa6e12d17e1c0658fb3294a1f68483d656_amd64 |
| Red Hat | registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:41df7aabbce42599bad7fdc721cd12aa6e12d17e1c0658fb3294a1f68483d656_amd64 as a component of cert-manager operator for Red Hat OpenShift 1.18 | *, *, * |
| golang | Go | |
| Red Hat | cert-manager Operator for Red Hat OpenShift | |
| Red Hat | registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:95f5dfa4331fcfb96357ed28f4d7f0fd00d9419d9252e3cff3962aec6cedbeb9_arm64 as a component of cert-manager operator for Red Hat OpenShift 1.18 | *, registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:95f5dfa4331fcfb96357ed28f4d7f0fd00d9419d9252e3cff3962aec6cedbeb9_arm64, * |
| Red Hat | registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:c06ef32fa81956319770edd1e5cd16e57599a29cbc3cd62b7bc1d49f61c12f23_ppc64le as a component of cert-manager operator for Red Hat OpenShift 1.18 | registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:c06ef32fa81956319770edd1e5cd16e57599a29cbc3cd62b7bc1d49f61c12f23_ppc64le, *, registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:c06ef32fa81956319770edd1e5cd16e57599a29cbc3cd62b7bc1d49f61c12f23_ppc64le |
| Red Hat | registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:95f5dfa4331fcfb96357ed28f4d7f0fd00d9419d9252e3cff3962aec6cedbeb9_arm64 as a component of cert-manager operator for Red Hat OpenShift 1.18 | registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:95f5dfa4331fcfb96357ed28f4d7f0fd00d9419d9252e3cff3962aec6cedbeb9_arm64, registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:95f5dfa4331fcfb96357ed28f4d7f0fd00d9419d9252e3cff3962aec6cedbeb9_arm64, registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:95f5dfa4331fcfb96357ed28f4d7f0fd00d9419d9252e3cff3962aec6cedbeb9_arm64 |
| Red Hat | registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:c06ef32fa81956319770edd1e5cd16e57599a29cbc3cd62b7bc1d49f61c12f23_ppc64le as a component of cert-manager operator for Red Hat OpenShift 1.18 | *, *, registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:c06ef32fa81956319770edd1e5cd16e57599a29cbc3cd62b7bc1d49f61c12f23_ppc64le |
| Red Hat | registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:f5df0f7414cc58ec0a00f4e26d646cfee475b9b6a7853215782eae552513e997_s390x as a component of cert-manager operator for Red Hat OpenShift 1.18 | registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:f5df0f7414cc58ec0a00f4e26d646cfee475b9b6a7853215782eae552513e997_s390x, registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:f5df0f7414cc58ec0a00f4e26d646cfee475b9b6a7853215782eae552513e997_s390x, registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9@sha256:f5df0f7414cc58ec0a00f4e26d646cfee475b9b6a7853215782eae552513e997_s390x |
Timeline
- Jan 26, 2026 CVE Published
- Apr 24, 2026 Distribution Patch
- Apr 24, 2026 Distribution Patch
- Apr 24, 2026 Security Advisory
- Apr 24, 2026 Security Advisory
- Apr 24, 2026 Security Advisory
- Apr 24, 2026 Security Advisory
- Jul 18, 2026 CVE Updated
References
- https://access.redhat.com/errata/RHSA-2026:1166 advisory
- https://access.redhat.com/security/cve/CVE-2025-61729 advisory
- https://access.redhat.com/security/cve/CVE-2025-66471 advisory
- https://access.redhat.com/security/cve/CVE-2026-21441 advisory
- https://access.redhat.com/security/updates/classification/ advisory
- https://docs.openshift.com/container-platform/latest/security/cert_manager_operator/index.html advisory
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_1166.json advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2418462 issue
- https://www.cve.org/CVERecord?id=CVE-2025-61729 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2025-61729 advisory
- https://go.dev/cl/725920 advisory
- https://go.dev/issue/76445 advisory
- https://groups.google.com/g/golang-announce/c/8FJoBkPddm4 advisory
- https://pkg.go.dev/vuln/GO-2025-4155 advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2419467 issue
- https://www.cve.org/CVERecord?id=CVE-2025-66471 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2025-66471 advisory
- https://github.com/urllib3/urllib3/commit/c19571de34c47de3a766541b041637ba5f716ed7 advisory
- https://github.com/urllib3/urllib3/security/advisories/GHSA-2xpw-w6gg-jr37 advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2427726 issue
…and 4 more