VDB
RHSA-2026:80684
RHSA-2026:80684
PUBLISHED
CVSS 8.100000381469727 HIGH
A flaw was found in the `crypto/x509` package of `golang`. This vulnerability allows a remote attacker to cause a Denial of Service (DoS) by presenting a specially crafted X.509 certificate with a large number of DNS Subject Alternative Name (SAN) entries. The certificate verification process, specifically the `VerifyHostname` function, incurs excessive computational overhead due to repeated string operations when processing these entries. This can lead to a significant performance degradation or unresponsiveness of systems validating such certificates.
Risk Scores
CVSS 3.1
8.100000381469727
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | registry.redhat.io/rhosp-rhel9/osp-director-downloader@sha256:b4a5620ca7a228bd175b53a1dd8116b47bfb16460c628318382feeeb46c7bee9_amd64 as a component of Red Hat OpenStack Platform 17.1 | * |
| Red Hat | registry.redhat.io/rhosp-rhel9/osp-director-operator-bundle@sha256:6baa13d985ef1ff6f08399cc2ef04832e23982472bfdede2a7acd9a4b559c637_amd64 as a component of Red Hat OpenStack Platform 17.1 | * |
| Red Hat | registry.redhat.io/rhosp-rhel9/osp-director-operator@sha256:c451fd722d0eed3d2a416fe66d9852310b585e7fa7cacb24675a6c06ee30d9d6_amd64 as a component of Red Hat OpenStack Platform 17.1 | * |
| Red Hat | registry.redhat.io/rhosp-rhel9/osp-director-agent@sha256:6137209995c857c10d1b7d55eafaa32dd14fef224f575e71f912eab28a76bbbb_amd64 as a component of Red Hat OpenStack Platform 17.1 | * |
Timeline
- Oct 12, 2026 CVE Published
- Nov 1, 2026 CVE Updated
- Nov 1, 2026 Distribution Patch
- Nov 1, 2026 Distribution Patch
- Nov 1, 2026 Security Advisory
- Nov 1, 2026 Security Advisory
- Nov 1, 2026 Security Advisory
- Nov 1, 2026 Security Advisory
- Nov 1, 2026 Security Advisory
- Nov 1, 2026 Security Advisory
- Nov 1, 2026 Security Advisory
- Nov 1, 2026 Security Advisory
References
- https://access.redhat.com/errata/RHSA-2026:80684 advisory
- https://access.redhat.com/security/cve/CVE-2026-27145 advisory
- https://access.redhat.com/security/cve/CVE-2026-32283 advisory
- https://access.redhat.com/security/cve/CVE-2026-33811 advisory
- https://access.redhat.com/security/cve/CVE-2026-33818 advisory
- https://access.redhat.com/security/cve/CVE-2026-39829 advisory
- https://access.redhat.com/security/cve/CVE-2026-39830 advisory
- https://access.redhat.com/security/cve/CVE-2026-42504 advisory
- https://access.redhat.com/security/cve/CVE-2026-46597 advisory
- https://access.redhat.com/security/cve/CVE-2026-56853 advisory
- https://access.redhat.com/security/cve/CVE-2026-56858 advisory
- https://access.redhat.com/security/cve/CVE-2026-56859 advisory
- https://access.redhat.com/security/cve/CVE-2026-56860 advisory
- https://access.redhat.com/security/cve/CVE-2026-56862 advisory
- https://access.redhat.com/security/updates/classification/ advisory
- https://catalog.redhat.com/software/containers/search advisory
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_80684.json advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2484207 issue
- https://www.cve.org/CVERecord?id=CVE-2026-27145 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-27145 advisory
…and 82 more