VDB
RHSA-2026:2123
RHSA-2026:2123
PUBLISHED
CVSS 7.5 HIGH
Record from redhat · Published February 5, 2026
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/openshift-builds/openshift-builds-operator-bundle@sha256:c215fefbe944f32ee3dd07774ea8b1fb4329067b614591c118b1f6ec9caa56af_amd64 as a component of Red Hat OpenShift Builds 1.7.4 | * |
| golang | go | |
| Red Hat | registry.redhat.io/openshift-builds/openshift-builds-operator-bundle@sha256:c215fefbe944f32ee3dd07774ea8b1fb4329067b614591c118b1f6ec9caa56af_amd64 as a component of Red Hat OpenShift Builds 1.7.1 | registry.redhat.io/openshift-builds/openshift-builds-operator-bundle@sha256:c215fefbe944f32ee3dd07774ea8b1fb4329067b614591c118b1f6ec9caa56af_amd64 |
| Red Hat | registry.redhat.io/openshift-builds/openshift-builds-operator-bundle@sha256:c215fefbe944f32ee3dd07774ea8b1fb4329067b614591c118b1f6ec9caa56af_amd64 as a component of Red Hat OpenShift Builds 1.7.2 | registry.redhat.io/openshift-builds/openshift-builds-operator-bundle@sha256:c215fefbe944f32ee3dd07774ea8b1fb4329067b614591c118b1f6ec9caa56af_amd64, * |
| Red Hat | registry.redhat.io/openshift-builds/openshift-builds-operator-bundle@sha256:c215fefbe944f32ee3dd07774ea8b1fb4329067b614591c118b1f6ec9caa56af_amd64 as a component of Red Hat OpenShift Builds 1.7.2 | *, registry.redhat.io/openshift-builds/openshift-builds-operator-bundle@sha256:c215fefbe944f32ee3dd07774ea8b1fb4329067b614591c118b1f6ec9caa56af_amd64 |
Timeline
- Feb 5, 2026 CVE Published
- May 5, 2026 Distribution Patch (2 in total, the first dated here)
- May 5, 2026 Security Advisory (2 in total, the first dated here)
- Jul 8, 2026 CVE Updated
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln RHSA-2026:2123
vulnetix vdb fixes RHSA-2026:2123Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/RHSA-2026%3A2123/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart
References
- https://access.redhat.com/security/updates/classification/ advisory
- https://go.dev/cl/725920 advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2418462 issue
- https://access.redhat.com/errata/RHSA-2026:2123 advisory
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_2123.json advisory
- https://nvd.nist.gov/vuln/detail/CVE-2025-61729 advisory
- https://groups.google.com/g/golang-announce/c/8FJoBkPddm4 advisory
- https://go.dev/issue/76445 advisory
- https://pkg.go.dev/vuln/GO-2025-4155 advisory
- https://www.cve.org/CVERecord?id=CVE-2025-61729 advisory
- https://access.redhat.com/security/cve/CVE-2025-61729 advisory