Read the docs
Red Hat Security Advisory

RHSA-2026:89892

rhc security update

Released 2026-10-26 · Red Hat rating Important · View on Red Hat →

Fixed in

Fixes 4 records

TI-2026-69840 CVE-2026-97031 · GHSA-hq7w-2xrq-wp2j

Memory exhaustion in Go crypto/tls via malformed ECH extensions

Priority MEDIUM 40

Multiple ECH outer extension references are not permitted under RFC 9849; previously, a client could send a well-crafted packet that could trigger memory exhaustion in the server process by specifying multiple references…

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00716 Published 2026-10-08 Partial fix · 1.26.9, 1.27.2 CWE-405
TI-2026-69828 CVE-2026-78669

Excessive CPU use from repeated window changes in Go net/http

Priority MEDIUM 40

A malicious HTTP/2 peer can cause excessive CPU consumption in the client or server by opening a large number of streams and then sending many small SETTINGS frames containing SETTINGS_INITIAL_WINDOW_SIZE values.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00847 Published 2026-10-08 Partial fix · 1.26.9, 1.27.2 +1 CWE-405
TI-2026-69827 CVE-2026-78667 · GHSA-f4xw-m386-m277

Excessive CPU use in Go net/http when parsing Range headers

Priority MEDIUM 40

When parsing a Range header containing a large number of small ranges, FileServer(FS), ServeContent, and ServeFile(FS) can consume an excessive amount of CPU.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00663 Published 2026-10-08 Partial fix · 1.26.9, 1.27.2 CWE-770