VDB
RHSA-2026:54836
RHSA-2026:54836
PUBLISHED
CVSS 8.100000381469727 HIGH
A flaw was found in the `net/http` component of the Go standard library. When a server is configured to support unencrypted HTTP/2, it reads initial bytes from new connections to detect the HTTP/2 client preface. However, the `ReadHeaderTimeout` is not correctly applied during this process. This oversight could allow a remote attacker to maintain open connections indefinitely, potentially leading to a Denial of Service (DoS) by exhausting server resources.
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 | golang1.25-tests-0:1.25.13-0.1.hum1@noarch@public-hummingbird-x86_64-rpms as a component of Red Hat Hardened Images | 1.25-tests |
| Red Hat | golang1-25-main@noarch as a component of Red Hat Hardened Images | * |
| Red Hat | golang1.25-src-0:1.25.13-0.1.hum1@noarch@public-hummingbird-aarch64-rpms as a component of Red Hat Hardened Images | 1.25-src |
| Red Hat | golang1.25-0:1.25.13-0.1.hum1@src as a component of Red Hat Hardened Images | 1.25-0 |
| Red Hat | golang1.25-misc-0:1.25.13-0.1.hum1@noarch@public-hummingbird-aarch64-rpms as a component of Red Hat Hardened Images | 1.25-misc |
| Red Hat | golang1.25-docs-0:1.25.13-0.1.hum1@noarch@public-hummingbird-x86_64-rpms as a component of Red Hat Hardened Images | 1.25-docs |
| Red Hat | golang1-25-main@x86_64 as a component of Red Hat Hardened Images | * |
| Red Hat | golang1.25-misc-0:1.25.13-0.1.hum1@noarch@public-hummingbird-x86_64-rpms as a component of Red Hat Hardened Images | 1.25-misc |
| Red Hat | golang1.25-bin-0:1.25.13-0.1.hum1@x86_64 as a component of Red Hat Hardened Images | 1.25-bin |
| Red Hat | golang1.25-src-0:1.25.13-0.1.hum1@noarch@public-hummingbird-x86_64-rpms as a component of Red Hat Hardened Images | 1.25-src |
| Red Hat | golang1.25-0:1.25.13-0.1.hum1@aarch64 as a component of Red Hat Hardened Images | 1.25-0 |
| Red Hat | golang1.25-tests-0:1.25.13-0.1.hum1@noarch@public-hummingbird-aarch64-rpms as a component of Red Hat Hardened Images | 1.25-tests |
| Red Hat | golang1.25-bin-0:1.25.13-0.1.hum1@aarch64 as a component of Red Hat Hardened Images | 1.25-bin |
| Red Hat | golang1.25-docs-0:1.25.13-0.1.hum1@noarch@public-hummingbird-aarch64-rpms as a component of Red Hat Hardened Images | 1.25-docs |
| Red Hat | golang1-25-main@aarch64 as a component of Red Hat Hardened Images | * |
| Red Hat | golang1-25-main@src as a component of Red Hat Hardened Images | * |
| Red Hat | golang1.25-docs-0:1.25.13-0.1.hum1@noarch as a component of Red Hat Hardened Images | 1.25-docs |
| Red Hat | golang1.25-0:1.25.13-0.1.hum1@x86_64 as a component of Red Hat Hardened Images | 1.25-0 |
Timeline
- Aug 14, 2026 CVE Published
- Oct 21, 2026 CVE Updated
- Oct 21, 2026 Distribution Patch
- Oct 21, 2026 Distribution Patch
- Oct 21, 2026 Security Advisory
- Oct 21, 2026 Security Advisory
- Oct 21, 2026 Security Advisory
- Oct 21, 2026 Security Advisory
- Oct 21, 2026 Security Advisory
- Oct 21, 2026 Security Advisory
- Oct 21, 2026 Security Advisory
References
- https://access.redhat.com/errata/RHSA-2026:54836 advisory
- https://images.redhat.com/ advisory
- https://access.redhat.com/security/cve/CVE-2026-56853 advisory
- https://access.redhat.com/security/updates/classification/ advisory
- https://access.redhat.com/security/cve/CVE-2026-56860 advisory
- https://access.redhat.com/security/cve/CVE-2026-56859 advisory
- https://access.redhat.com/security/cve/CVE-2026-33818 advisory
- https://access.redhat.com/security/cve/CVE-2026-56862 advisory
- https://access.redhat.com/security/cve/CVE-2026-56858 advisory
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_54836.json advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2515815 issue
- https://www.cve.org/CVERecord?id=CVE-2026-33818 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-33818 advisory
- https://go.dev/cl/814980 advisory
- https://go.dev/issue/80405 advisory
- https://groups.google.com/g/golang-announce/c/94pEornpRlI advisory
- https://pkg.go.dev/vuln/GO-2026-5972 advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2515827 issue
- https://www.cve.org/CVERecord?id=CVE-2026-56853 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-56853 advisory
…and 27 more